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Re: Hw much do u knw maths?
@stsundfab....im not dissing you, but i think english is not one of your strongest links. 'Croud', last i checked the dico, it was still spelt crowd...with a 'W'. Writing without punctuations makes a very difficult read. You no holy pass afterall!
Btw, you should have upgraded yourself to the point of being invited for 'chats' not for 'gbo gbo ero' tests. That's food for thought.
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Re: Hw much do u knw maths?
thank you brown sugar. stsundfab cannt even give an answr if he claims to be brilliant
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Re: Hw much do u knw maths?
st sunfab unltd ure unltdly proud and foolish sorry to say. produce d answr @ least if am wrong 9 8 4/3 which is d rate of 1 persn taks us back to 12 whch is where we came from in d questn. so whats ur point. try get some god sense and leave d line of mathematics. u can be a great historian u know... lol
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Re: Hw much do u knw maths?
Quote:
Originally Posted by adolaj001
st sunfab unltd ure unltdly proud and foolish sorry to say. produce d answr @ least if am wrong 9 * 4/3 which is d rate of 1 persn taks us back to 12 whch is where we came from in d questn. so whats ur point. try get some god sense and leave d line of mathematics. u can be a great historian u know... lol
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Re: Hw much do u knw maths?
st sunfab unltd ure unltdly proud and foolish sorry to say. produce d answr @ least if am wrong 9*4/3 which is d rate of 1 persn taks us back to 12 whch is where we came from in d questn. so whats ur point. try get some god sense and leave d line of mathematics. u can be a great historian u know... lol
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Re: Hw much do u knw maths?
@Adolaj001
He that knows not and knows not that he knows not, is a fool.
u dont have to be a guru or genuis to figure this out. its just common sense. If it takes 9people 12days to do a job, how in hecks name wld it take 1 person less time to do the same job?????????
Now lets work on this together,
9people work at a rate of 12days
1person wld work at a rate of 9*12=108days
so it wld take 1 person 108days to do the work.
if 4 people decide to do the work and share it equally, then 4pple would finish the job in 108/4=27days.
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Re: Hw much do u knw maths?
This is the solution:
if 9 persons used 12 days
1 person will : (12 x 9) days
4 persons will : (12 x 9)/4 = 27 days
12 days for 9 persons
1 day : (9 x 12) persons
3 days : (9 x 12)/3 = 36 persons
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Re: Hw much do u knw maths?
Quote:
Originally Posted by brownsugar1
@Adolaj001
He that knows not and knows not that he knows not, is a fool.
Adelaj001, u dont have to be a guru or genuis to figure this out. its just common sense. If it takes 9people 12days to do a job, how in hecks name wld it take 1 person less time to do the same job?????????
Now lets work on this together,
9people work at a rate of 12days
1person wld work at a rate of 9*12=108days
so it wld take 1 person 108days to do the work.
if 4 people decide to do the work and share it equally, then 4pple would finish the job in 108/4=27days.
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Re: Hw much do u knw maths?
There is a simple way for solving such arithmetic without thinking much. I learned this method when I was in Primary 6. I will start by giving a more complex example
If 30 Men can clear 45 Plots of Land in 5 Days. How many Men can clear 15 Plots of Land in 25 Days
Arrange your Parameter as Follows
Men Plots Days
30 45 15
? 90 10
More Plot More Men = 90/45
Less Days More Men = 15/10
Answer = 30 * 90/45 *15/10
= 90 Men
Bring it to the Current Question
If 9 persons finishd a job in 12 days,
(i) hw many days wil it take 4 persons working at the same rate to finish d job.
(ii) hw many persons wil be required to finish dsame piece of wrk in 3 days. Pls show ur workings
(i)
Persons Days
9 12
4 ?
Less Person More Days = 9/4
Answer = 12 * 9/4
= 27 Days
(ii)
Persons Days
9 12
? 3
Less Days More Person = 12/3
Answer = 9 * 12/3
= 36 Persons
Case Closed
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Re: Hw much do u knw maths?
Correction
There is a simple way for solving such arithmetic without thinking much. I learned this method when I was in Primary 6. I will start by giving a more complex example
If 30 Men can clear 45 Plots of Land in 15 Days. How many Men can clear 90 Plots of Land in 10 Days
Arrange your Parameter as Follows
Men Plots Days
30 45 15
? 90 10
More Plot More Men = 90/45
Less Days More Men = 15/10
Answer = 30 * 90/45 *15/10
= 90 Men
Bring it to the Current Question
If 9 persons finishd a job in 12 days,
(i) hw many days wil it take 4 persons working at the same rate to finish d job.
(ii) hw many persons wil be required to finish dsame piece of wrk in 3 days. Pls show ur workings
(i)
Persons Days
9 12
4 ?
Less Person More Days = 9/4
Answer = 12 * 9/4
= 27 Days
(ii)
Persons Days
9 12
? 3
Less Days More Person = 12/3
Answer = 9 * 12/3
= 36 Persons
Case Closed
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Re: Hw much do u knw maths?
@brownsugar1 me nd u cannt figure out anythng bcos we have develpd our brains differently. 1 person works at d same rate at which 9 pple will work in 12 days. go bck 2 ur mths tutor in sec. school...safe am gonna post no more comment on this.
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Re: Hw much do u knw maths?
if 9prsns=12days dont jst jmp to say 1 persn =108 days. say 1 prsn=x days
i.e. 9prsns=12days
1 prsn=x days
x=4/3 for 1 prsn
4pple= 4*4/3 good night
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Re: Hw much do u knw maths?
1. if 9 people do a job for 12 days,
4 people would do the job for x days:
9/12=4/x
9x=12*4
9x=48
x= 48/9
x= 5 days
2. 1f 9 people do a job for 12 days,
in 3 days, it would take x people to do the job:
1 person would do the job in 108 (9*12) days
3 persons would complete the job in :
108/3 = 36 days
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Re: Hw much do u knw maths?
d fed poly, nekede guy dat started dis, c wat u'v caused. Aint dis jst interesting. Dis is good. Mannnn, I'm really havin fun. Wow!
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Re: Hw much do u knw maths?
Quote:
Originally Posted by Dagunro
Let me put a new dimension to this.... 8)
...Since the job has been completed by 9 persons,
then there will be no job for the other 4 persons to do
and nobody will be required to do the job since it's been completed! ;D ;D
I concur!
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Re: Hw much do u knw maths?
Quote:
Originally Posted by St Sundfab Unltd
NIGERIAN APPLICANTS!!! WHY, THIS IS NOT GOOD ENOUGH!!!
PLEASE READ THIS. TRY READ ALL, THANKS
I felt so embarassed with what I saw concerning that stupid, on-the-walk, biro-less and common entrance examination question. Well, the person who shot the question only make me confirm that Graduates as so called out there are looking for the best when they are not even good not to talk of being better before being called best for jobs.
My experience @ three Aptitude within 2008/10 so far have made me to relax and not struggle for any UPCOMING TESTS. I see myself as an average performer trying to upgrade myself against eminent competing Applicant.
In 2008, I wrote a test among 150 applicants @ C&I Leasing PLC recruiting for a Telecom Company then (Name withheld), I scored 96%, the person who scored next after me scored 86%, next to him was 43, 40, 34,.... It means only 2 out of 150 passed. TOO BAD
Last year 2009, I took part in the Nigerian Bottling Company(NBC) Tranee technician Aptitude test. All Applicants from west region i.e Lagos, Ibadan, Osun,... came to write in Ikeja. There was morning, afternoon & evening session. I even heard that some people wrote theirs a day before my own date. On my own day @ Oregun, afternoon session, the hall took not less than 500 applicants. Imagine the total number if there were up to minimum of 6 session for that 2 days. let say 3000 Applicants. at the venue, I was cold and scared seeing the croud. Though I had a job with PZ Cussons Plc, I wanted the NBC job. I wrote the test not to my best due to the CROUD TENSION.
When the result was pasted, WITH ALL MY SHAMBLE AND UN-COORDINATED PERFORMANCE, I WAS THE OVERALL 2ND BEST, FOR THE WHOLE LOT OF THE NBC CROUD FROM ALL OVER WEST REGION NIGERIA. The 1st person scored 42% with GP (Gross point) 5/10, I scored 37% with G.P 4/10. The multitude that followed after mine scored below 30, having G.P 2/10 and below. Does it mean, all the applicants never went to the school they came out from. I wonder WHY!!!
Let me reserve my experience in PZ test and Training outcomes till next time. If need be.
These days, I don't wish to worry and prepare for aptitude test again since the challenges I've always feared so much are not always there. To upgrade, I see it as irrelevant.
Though I never fail to recognise the GRACE of GOD upon me. But Applicants should upgrade themselve to be competent enough for the jobs. There are jobs but Best Jobs are being taken over by the competents.
Maybe the competents who are already employed should continue changing jobs available for the unemployed and seizing the best jobs. Since whenever the apply and take tests and interviews, they'll surely be taken.
GUYS, LETS GO AND DO OUR HOMEWORK WELL, UPGRADE URSELF TO GET THE BEST AVAILABLE.
I'M SORRY IF I'VE OFFENDED ANYONE WITH MY EPISTLE, IT'S ONLY A LIVE AND DIRECT REALITY BY ME.
WISH U ALL THE BEST.
St Sundfab Unltd Intl
Your write up shows that you are a bunch of egocentric dunce. If I conduct an intervien for you, you will fail woefully. Most of the time, aptitude test is not the true test of intelligence. Mind you, there is a wide gap between brilliance and intelligence.
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Re: Hw much do u knw maths?
Quote:
Originally Posted by St Sundfab Unltd
NIGERIAN APPLICANTS!!! WHY, THIS IS NOT GOOD ENOUGH!!!
PLEASE READ THIS. TRY READ ALL, THANKS
I felt so embarassed with what I saw concerning that stupid, on-the-walk, biro-less and common entrance examination question. Well, the person who shot the question only make me confirm that Graduates as so called out there are looking for the best when they are not even good not to talk of being better before being called best for jobs.
My experience @ three Aptitude within 2008/10 so far have made me to relax and not struggle for any UPCOMING TESTS. I see myself as an average performer trying to upgrade myself against eminent competing Applicant.
In 2008, I wrote a test among 150 applicants @ C&I Leasing PLC recruiting for a Telecom Company then (Name withheld), I scored 96%, the person who scored next after me scored 86%, next to him was 43, 40, 34,.... It means only 2 out of 150 passed. TOO BAD
Last year 2009, I took part in the Nigerian Bottling Company(NBC) Tranee technician Aptitude test. All Applicants from west region i.e Lagos, Ibadan, Osun,... came to write in Ikeja. There was morning, afternoon & evening session. I even heard that some people wrote theirs a day before my own date. On my own day @ Oregun, afternoon session, the hall took not less than 500 applicants. Imagine the total number if there were up to minimum of 6 session for that 2 days. let say 3000 Applicants. at the venue, I was cold and scared seeing the croud. Though I had a job with PZ Cussons Plc, I wanted the NBC job. I wrote the test not to my best due to the CROUD TENSION.
When the result was pasted, WITH ALL MY SHAMBLE AND UN-COORDINATED PERFORMANCE, I WAS THE OVERALL 2ND BEST, FOR THE WHOLE LOT OF THE NBC CROUD FROM ALL OVER WEST REGION NIGERIA. The 1st person scored 42% with GP (Gross point) 5/10, I scored 37% with G.P 4/10. The multitude that followed after mine scored below 30, having G.P 2/10 and below. Does it mean, all the applicants never went to the school they came out from. I wonder WHY!!!
Let me reserve my experience in PZ test and Training outcomes till next time. If need be.
These days, I don't wish to worry and prepare for aptitude test again since the challenges I've always feared so much are not always there. To upgrade, I see it as irrelevant.
Though I never fail to recognise the GRACE of GOD upon me. But Applicants should upgrade themselve to be competent enough for the jobs. There are jobs but Best Jobs are being taken over by the competents.
Maybe the competents who are already employed should continue changing jobs available for the unemployed and seizing the best jobs. Since whenever the apply and take tests and interviews, they'll surely be taken.
GUYS, LETS GO AND DO OUR HOMEWORK WELL, UPGRADE URSELF TO GET THE BEST AVAILABLE.
I'M SORRY IF I'VE OFFENDED ANYONE WITH MY EPISTLE, IT'S ONLY A LIVE AND DIRECT REALITY BY ME.
WISH U ALL THE BEST.
St Sundfab Unltd Intl
Your write up shows that you are a bunch of egocentric dunce. If I conduct an interview for you, you will fail woefully. Most of the time, aptitude test is not the true test of intelligence. Mind you, there is a wide gap between brilliance and intelligence.
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Re: Hw much do u knw maths?
Quote:
Originally Posted by St Sundfab Unltd
NIGERIAN APPLICANTS!!! WHY, THIS IS NOT GOOD ENOUGH!!!
PLEASE READ THIS. TRY READ ALL, THANKS
...My experience @ three Aptitude within 2008/10 so far have made me to relax and not struggle for any UPCOMING TESTS. I see myself as an average performer trying to upgrade myself against eminent competing Applicant.
In 2008, I wrote a test among 150 applicants @ C&I Leasing PLC recruiting for a Telecom Company then (Name withheld), I scored 96%, the person who scored next after me scored 86%, next to him was 43, 40, 34,.... It means only 2 out of 150 passed. TOO BAD
Last year 2009, I took part in the Nigerian Bottling Company(NBC) Tranee technician Aptitude test. All Applicants from west region i.e Lagos, Ibadan, Osun,... came to write in Ikeja. There was morning, afternoon & evening session. I even heard that some people wrote theirs a day before my own date. On my own day @ Oregun, afternoon session, the hall took not less than 500 applicants. Imagine the total number if there were up to minimum of 6 session for that 2 days. let say 3000 Applicants. at the venue, I was cold and scared seeing the croud. Though I had a job with PZ Cussons Plc, I wanted the NBC job. I wrote the test not to my best due to the CROUD TENSION.
When the result was pasted, WITH ALL MY SHAMBLE AND UN-COORDINATED PERFORMANCE, I WAS THE OVERALL 2ND BEST, FOR THE WHOLE LOT OF THE NBC CROUD FROM ALL OVER WEST REGION NIGERIA. The 1st person scored 42% with GP (Gross point) 5/10, I scored 37% with G.P 4/10. The multitude that followed after mine scored below 30, having G.P 2/10 and below. Does it mean, all the applicants never went to the school they came out from. I wonder WHY!!!
Let me reserve my experience in PZ test and Training outcomes till next time. If need be.
These days, I don't wish to worry and prepare for aptitude test again since the challenges I've always feared so much are not always there. To upgrade, I see it as irrelevant.
Though I never fail to recognise the GRACE of GOD upon me. But Applicants should upgrade themselve to be competent enough for the jobs. There are jobs but Best Jobs are being taken over by the competents.
Maybe the competents who are already employed should continue changing jobs available for the unemployed and seizing the best jobs. Since whenever the apply and take tests and interviews, they'll surely be taken.
GUYS, LETS GO AND DO OUR HOMEWORK WELL, UPGRADE URSELF TO GET THE BEST AVAILABLE.
I'M SORRY IF I'VE OFFENDED ANYONE WITH MY EPISTLE, IT'S ONLY A LIVE AND DIRECT REALITY BY ME.
WISH U ALL THE BEST.
St Sundfab Unltd Intl
@St Sundfab Unltd: if you've ever taken the test of 1 or more of the following companies,you'll do more than just reading for the preparation;
Mobil, Shell, P&G, FrieslandWampco(Workforce), Honeywell(Workforce), Dragnet(GSE), etc just to mention a few.
The companies that you have taken their tests in my own opinion have cheap questions, that's why you could come out boldly that you had so so so score. If you've ever taken, especially Mobil test, you'll find reason to prepare far more than u have been preparing for all these your cheap companies' test. U'ld not even get to know wat u scored.
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Re: Hw much do u knw maths?
Interesting.
Well, folks, I will be allowed to express my mind, then I think a question like this in not worth all the intricate analysis that I have seen here.
I know I may receive some bashing, but then naija graduates, I think we need to step up our game.
That's why we have materials like the local gmat thing that can help us around something like this
For me, If this kind of question is giving us concerns, then I wonder how we want to cope with some 'wicked' tests like some of those mentioned by gzl.
If my memory is good, I first met something like this in primary school.
Like I said earlier, I dont mind to be bashed, but Im only saying this out of concern.
All the best to us all
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Re: Hw much do u knw maths?
Quote:
Originally Posted by sightquest1
Interesting.
Well, folks, I will be allowed to express my mind, then I think a question like this in not worth all the intricate analysis that I have seen here.
I know I may receive some bashing, but then naija graduates, I think we need to step up our game.
That's why we have materials like the local gmat thing that can help us around something like this
For me, If this kind of question is giving us concerns, then I wonder how we want to cope with some 'wicked' tests like some of those mentioned by gzl.
If my memory is good, I first met something like this in primary school.
Like I said earlier, I dont mind to be bashed, but Im only saying this out of concern.
All the best to us all
Nobody is gonna bash you cos you've said the mind of many people. I wonder how rubbish threads like this manage to make the home page. Moderators, wake up please...
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Re: Hw much do u knw maths?
Quote:
Originally Posted by mantech
Correction
There is a simple way for solving such arithmetic without thinking much. I learned this method when I was in Primary 6. I will start by giving a more complex example
If 30 Men can clear 45 Plots of Land in 15 Days. How many Men can clear 90 Plots of Land in 10 Days
Arrange your Parameter as Follows
Men Plots Days
30 45 15
? 90 10
More Plot More Men = 90/45
Less Days More Men = 15/10
Answer = 30 * 90/45 *15/10
= 90 Men
Bring it to the Current Question
If 9 persons finishd a job in 12 days,
(i) hw many days wil it take 4 persons working at the same rate to finish d job.
(ii) hw many persons wil be required to finish dsame piece of wrk in 3 days. Pls show ur workings
(i)
Persons Days
9 12
4 ?
Less Person More Days = 9/4
Answer = 12 * 9/4
= 27 Days
(ii)
Persons Days
9 12
? 3
Less Days More Person = 12/3
Answer = 9 * 12/3
= 36 Persons
Case Closed
maybe u also need to do your calculation again.u said 30men can clear 45plots of land in 5days......how can u then say 90men will clear 15plot in 25days.....that's very wrong cos d answer should be 2men.....do it again bro
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Re: Hw much do u knw maths?
Good job guys...just a word of advice. Seek for shorter methods of solving aptitude test questions as they are not certificate exams where test-of-knowledge is uppermost on your examiners list. But in selection exams like aptitude test, recruitment and entrance exams; speed, accuracy, and concerntration and ability to recognise patterns leading to test of your conceptual skills are the hallmarks.This is what actually drives the nature of the qquestions. In most cases you do not really need calculators for most of the arithmetic/numerical questions as they will slow you down.
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Re: Hw much do u knw maths?
Yes, dis is d soln.
i) 1 person = 9 x 12 = 108 days
:. 4 persons = 108/4 = 27 days.
ii) 1 person = 9 x 12 = 108 days
:. 3 days = 108/3 = 36 persons.
Aluks
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Re: Hw much do u knw maths?
dont worry i've seen the anwser here!!!!!!!!!!!!!!
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Re: Hw much do u knw maths?
if 9 persons finished the work in 12 days
1 person will finish it in 9 x 12 days = 108 days
4 persons will finish it in 9 x 12 divided by 4 = 27 days
ii if 9 persons can di the work in 12 days,
18 persons will finish it in 6 days
therefore, 36 persons will finish it in 3 days
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Re: Hw much do u knw maths?
@ St. Sndfab unltd or whatever ur name is. I'm provoked to my spirit for holding me hostage in order to read painfully through ur self trumpet-blowing triumph in aptitude tests in the past 2 year.
Tanx very much for also letting us know that you earn more than 100K monthly. You ignorantly sound as if you were the greastest genius ever step on the surface of the earth who is infallible! NO SIR!!! It can't be you or me.
Just to prove my case that even the most brilliant can fail, take a look at your post once more, you get to discover that you Wrote the word Crowd thrice in which case all spellings were consistently wrong! Two of your crowd spelled CROUD were written in upper case, this ruled out the excuse of typographical error.
For your info yours sincerely has always been a little above average, took NNPC test in Kano in 2006, Shade widely almost 80% of the questions yet scored a staggering 130 marks out 160! Due to this I was informed, to tell you further my crendentials erase very possiblity of cheating yet I ended up not getting the job at the end of the day.
Success depends on the answer given by the wisest man ever lived on earth. (Mr.) King Solomon in one of his book called Proverbs.(see Prov.9:11)
Alot of people including Nigerian shameless politicians calls our graduates all sorts of dehumanising names, well they foget that knowledge spread over generation is relative. This I mean what is expected be
known in the time past is not what is expected to be known now.
No Nigerian student sit for any aptitute test in 1970, or know how to operate a computer then, not to talk of driving the modern day automobile, operating complex electronics gadgets, follows the trends of the day and so on.
This day employer of labour expect even an Histotian graduate to be computer expert! He also expect a Mathmatician to know the date of birth of the 5th american President, and if He fails the whole WORLD gets to know that a Nigerian Graduates are fluke.
A Nigerian can become father of internet, can smuggle explosives without been detected by airport body scanner,design gear box for Mercedise Benz, design world class car for Audi, break a record of the longest Teenage lone first name it.
Who say we no too much?
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Re: Hw much do u knw maths?
:) ;) :D ;D >:( :( :o ??? ::) :P :-[ :-X :-\ :'(
9p=12days.......
Hence 1person=12*9=108
1person will do the job in 108 days
1p=108days
i) :)4*1p= 106/4....... 4p= 27days
Hence 4 people for 27days
ii) :)1p=108days
But 108/36 =3
Therefore 36*1p = 108/36....... 36p=3days
Thus, 36 people for 3days..................GOODLUCK :-* :-* :-*
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Re: Hw much do u knw maths?
this maths is very interesting, but its better to understand before believing wat u feel is real. pls, acason, i thought it was supposed to be cross multiplication. wat is ur own called? in the normal cross multiplication it shld be
1person=108days
.'. 4persons=108*4/1
i know am wrong but i want u to explain how that mathematics happened.
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Re: Hw much do u knw maths?
The solutions are:
(i) 9 *12=108, 108/4=27 days
(ii)108/3=36 persons
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Re: Hw much do u knw maths?
if 9 persons finished one work in 12 days
(1) 4 persons will be x days
solution
let x reprent day
9=12
4=x
cross multiply
9x = 4*12
9x = 48
divide both sides by 9 since focus is on x
9x/9 = 48/9
x =16/3
x=5.33
4 persons will do the same job in 5days 3hours
(1) x persons finished the same job 3days
solution
let x present person
9=12
x=3
cross multiply
12x =9*3
12x = 27
divide both sides by 12
12x/12 = 27/12
x=9/4
x=2.25
x=2 persons approximately
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Re: Hw much do u knw maths?
@timothy24january..., u don goof!
U need to apply d inverse variation principle not direct variation.
U can even solve the problem offhand without writing anything down on a paper owing to the limited time u hav to deal with it if u hav your punch. Whenever u see such problems like number of people to finish something, weda na work o!, drug o! Just name it. Just know that the more the number of people, the less the work, drug or anything these people hav to attack.
In that case,
people = constant/work
=> people*work = constant
just establish the constant and fix it on any part of the question your life go just de sweet u.
Pls no do this same thing when the rate of work is varying among the people involved. If they are not working at the same rate, just sum up the work each of them will do in a unit time (time could be in sec, min, hr, day, etc).
E.g if mr. P can finish a particular work in 9days, it means he can do only 1/9 of the work in a day. If mr. Q can finish THE SAME work in 3days, it means he can do 1/3 of the work in a day. So if both of them are working together, it means in a day both can do 1/9 + 1/3 of the work. Which is 4/9. The reciprocal of 4/9 gives the number of days both of them will work to finish that job i.e 9/4.
Some question can be tricky, if the work is increased by 150% how much of it would they have done in 3days?
I leave that for u to solve.
1 love house!
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Re: Hw much do u knw maths?
9persons finished job 12days
i:e 9*12=108
QS (1) says
how many day will 4 person finished the same job.
Ans; 4+x=108
then, we have x=108/4
x=27days
QS(2)
how many persons will take to finished the same work in 3days
Ans; 9*4=36
i:e we have 36person
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Re: Hw much do u knw maths?
fed man u're just gud, as a matter of fact i think we should be having something like this from time 2 time in oda to reawaken our brains. nice job
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Re: Hw much do u knw maths?
I just love this. Give me more. maths keeps life going do u knw dat?
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Re: Hw much do u knw maths?
Please house, i need a gmat guru to please contact me. Especially one that is good in maths. I have a proposal.
[email protected]
07033801718
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Re: Hw much do u knw maths?
if 9 persons=12days,
1person=12/9days
4persons=4*12/9=5*3/9 which is 5days 8hrs.
for 3days
if 1 person=12/9days
3days=3*9/12=2.5which is approximately 3 persons
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Re: Hw much do u knw maths?
if 9 persons=12days,
1person=12/9days
4persons=4*12/9=5*3/9 which is 5days 8hrs.
for 3days
if 1 person=12/9days
3days=3*9/12=2.5which is approximately 3 persons