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?
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let, x men can finish a work in 10 days. then 1 man will finish the work in 10x days.-----equation1
if x-10 men finish the work in 20 days then 1 man will finish the work in 20x-200 days.-------equation2
From equation1 &2,
10x=20x-200
then x=20 ans.
if x-10 men finish the work in 20 days then 1 man will finish the work in 20x-200 days.-------equation2
From equation1 &2,
10x=20x-200
then x=20 ans.
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