Question

054. 5 men or 10 women or 20 boys can complete a piece of work in 10 days. If 5 Men and 10 women work together, in how many days can they complete that same piece of work?
(A) 5 days
(B) 10 days
(C) 20 days
(D) 25 days
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Answer 1

5M =10W

or M /W =2:1

and 10W = 20 B

or W :B =1:2

therefore M :W :B =2:1:2 ( ONE DAY WORK)

5 men work =5*2= 10

and 10 women work= 10

therefore one day work together men and women =20

now total work = 5M * 10 = 10*10 =100

therefore no. of days = 100/20 =5 days