Aptitude - A certain number of men can finish a piece of work in 10 days. If however there were 10 men less it

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A certain number of men can finish a piece of work in 10 days. If however there were 10 men less it will take 10 days more for the work to be finished. How many men were there originally?

(a) 110 men
(b) 130 men
(c) 100 men
(d) none of these

Total Answers and Comments: 16

Last Update: November 16, 2009 Asked by: senthil

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Best Rated Answer

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Submitted by: pkaneria

We have 2 equations

n*10 = x and (n-10)*20 = x which gives n=20, where n is number of men to begin with.

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February 17, 2006 23:34:00

srini

RE: A certain number of men can finish a piece of work...

none of these. actuallythereare 10 mens if 10 mens do not work then it will take 10 more days to finish

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February 18, 2006 04:30:38

sachinp1979

Member Since: February 2006 Contribution: 7

RE: A certain number of men can finish a piece of work...

130 Men.

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March 25, 2006 08:43:37

pkaneria

Member Since: March 2006 Contribution: 13

RE: A certain number of men can finish a piece of work...

We have 2 equations

n*10 x and (n-10)*20 x which gives n 20 where n is number of men to begin with.

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1 0

Overall Rating: +1

March 31, 2006 20:27:29

bmuppets

Member Since: March 2006 Contribution: 1

RE: A certain number of men can finish a piece of work...

110. x/10 x-10/20 20x 10x-100 and x 100. Therefore x+10 110.

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April 05, 2006 11:55:26

aparna

RE: A certain number of men can finish a piece of work...

none of these

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April 19, 2006 13:39:18

jayanthi

RE: A certain number of men can finish a piece of work...

ans : none of these

x-10:x 10:20

20x-200 10x

10x 200

x 20

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April 23, 2006 15:57:07

sandeep meela

RE: A certain number of men can finish a piece of work...

i suppose answer is a . wat would be the answer whether i m correct r not?

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May 01, 2006 13:28:39

infor

Member Since: May 2006 Contribution: 4

RE: A certain number of men can finish a piece of work...

Since the number of days for each men to finish the same work will remain same even if we increase the men or not. This goves us two equations which are equal. Say x men are there initially. x mean finish in 10 days so each men can finish the same work in 10x days. Now lets say we reduce men by 10 then we have x-10 men and numner of days is 20. so

10x (x-10)20 which is 10x 200 so x 20 men in the begining.

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May 25, 2006 09:55:00

k.avinash

RE: A certain number of men can finish a piece of work...

its none of these the answer is 20

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June 26, 2006 08:57:10

#10

prasanna

RE: A certain number of men can finish a piece of work...

let x be original no of menx --------> 10 daysx-10------>10+10 daysby inverse proportionalityx*10 (x-10)*20x 20None of these

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