If 2 persons work in 24 hours. One person work in 10 hours, how many hours other person work?

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Rajesj reddy

  • Jul 14th, 2005
 

answer please

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swapna

  • Aug 8th, 2005
 

1/24-1/10= 7/120 
The other person can complete the work in 7/120 hrs.

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pravin k salunkhe

  • Sep 26th, 2005
 

14 hours

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Amarnath

  • Oct 13th, 2005
 

same as the other

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Simi

  • Oct 14th, 2005
 

Answer : 24hrs

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ramakrishna

  • Dec 5th, 2005
 

well the second person works in 120/7 hrs

pvp

  • Dec 25th, 2005
 

assuming both have same rate of doing work,time for 2nd person to complete the work alone = 24 + 24 = 48 hours10 hours or work has been done by 1st person hence 2nd person has to do 48-10 = 38 hours of workans: 38 hours

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senthil

  • May 24th, 2006
 

17 hours to complete the same work.

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karthik

  • Jun 10th, 2006
 

A+B=1/24A=1/10B=1/10-1/24B=7/120hours=120/7

mahitha

  • Jul 7th, 2006
 

Its not 7/120
7/120 is the work done.
where as, time taken is 120/7hrs

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ankur kohli

  • Jul 21st, 2006
 

2 persons work in 24hours.

 1 person works in 10 hours

so other ll work in 1/10-1/24=14/240that is he ll work in 120/7 hours

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Kripal

  • Sep 4th, 2006
 

2 persons work for 24 hours means 24x2=48 man working hours

Now there are two options

Option 1

One person worked for only 10 hours along with the other, whats the time taken for the other to complete the work?

Solution

2 persons work for 10 hours means 10x2=20 man working hours. So the balance (48-20=28) working hours remaining for the other person to complete the work

Option 2

Only one person worked for 10 hours, whats the time taken for the other to complete the work?

Solution

1 person worked for 10 hours means 10x1=10 man working hours. So the balance (48-10=38) working hours remaining for the other person to complete the work

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venkatesh

  • Oct 13th, 2006
 

the correct ans is 120/7

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koka

  • Jan 25th, 2007
 

14hours

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SharnCedar

  • Feb 18th, 2007
 

Are you sure this question was meant for a straight answer?  if I asked this question, I would not respect a person giving a "mathematical" answer it shows they have no understanding of how people cooperate and share work.  It shows they are a little stupid - obviously two people sharing the same work will be slower than one person doing it alone.  This is true for any work, even say house construction.  Two people can't nail a board at the same time, one must wait for the other at times. People dont' fit through the doorway at the same time, or there is only one power saw on the job and they must take turns. When you add people to any project, you slow the productivity of the existing people.  If you answer the mathematical answer, then it shows you've never actually worked anywhere or haven't thought about cooperation and how to do it efficiently.  It makes you look stupid to me, and I interview people.  Maybe its a cultural thing - in America where I interview we respect real knowledge more than "book smart".  I've worked many, many years and almost never is math the answer to any real question.  And I was a math genius in school, so I don't denigate math, its just not useful in actual life.

Are you sure the interviewer was testing your math skills, your algebra skills?  Or your real-world work experience, your cleverness?  The hint is that the question is not pure algebra, but it was about work and cooperation.  Maybe they don't want a math answer.

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Sagar Wani

  • Mar 2nd, 2007
 




           120/7hr

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sairaghu

  • Jun 16th, 2007
 

14 hrs. If my answer is wrong plz reply with correct answer

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souravray_88

  • Feb 18th, 2010
 

Let the 2 persons be A & B.  A & B can do the work in 24 hours. So in 1 hour A & B can do = 1/24 part. A only can do the work in 10 hours. So in 1 hour A can do = 1/10 part.So in 1 hour B can do = 1/10 – 1/24 = 7/120 part.  So B can complete the work in 120/7 hours.

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