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Time and Work
A certain number of men can finish a piece of work in 90 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) 90 (b) 80 (c) 110 (d) 100
Read Solution (Total 2)
-
- no.of men no.of days
x 90
x-10 10more days(90+10)
==>90x=100(x-10)
==>90x=100x-1000
==>10x=1000
==>x=100 - 5 years agoHelpfull: Yes(2) No(0)
- let , the number of men is x
now coming to the question,90x=1work
(x-10)*(90+10)=1 work
so, 100x-1000=90x
100x-90x=1000
x=100
Ans is (d)100 - 5 years agoHelpfull: Yes(0) No(1)
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