srini
Answered On : Feb 17th, 2006
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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130 Men.
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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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110. x/10 = x-10/20 20x=10x-100 and x = 100. Therefore x+10 = 110.
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aparna
Answered On : Apr 5th, 2006
none of these
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jayanthi
Answered On : Apr 19th, 2006
ans : none of these
x-10:x = 10:20
20x-200 =10x
10x = 200
x=20
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sandeep meela
Answered On : Apr 23rd, 2006
i suppose answer is a . wat would be the answer whether i m correct r not?
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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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k.avinash
Answered On : May 25th, 2006
its none of these , the answer is 20
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prasanna
Answered On : Jun 26th, 2006
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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Basheer
Answered On : Aug 6th, 2006
Ans) D
(x-10) : x = 20 : 10
20x-200 = 10x
20x-10x = 200
x = 200/10
x = 20
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rahul
Answered On : Oct 6th, 2006
none of these
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yogeshgurav007
Answered On : Feb 7th, 2007
Suppose X men does same work in 10 days
X-10 men does same work in 20 days
cross20X = 10X - 10010X = -100X = -10
means nobody there on work
Ans is D> none of these
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let x men can finish it in 10 days ( 1 man can finish it in 10x days)
then x-10 can finish it in 20 days (1 man can finish it in 20(x-10) days)
here no of men is decreasing so no of days will be more to finish work( from above statements it is true )
since it is indirectionally proportional
10 * x = 20(x-10);
10x = 200;
x=20 ;ans :20
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Let no of men = x.
x men can do a piece of work in 10 days.
so, 1 man can do it in 10*x days.
Now (x-10) men do the work in 20 days.
so, 1 man ... in 20*(x-10).
so, 20(x-10) = 10x.
so, x = 20.
Ans is option (d).
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x*10=(x-10)*(10*2)
10x =20x-200
20x-10x=200
10x=200
x=20
check it if any step is wrong
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