If 10 men or 18 women can do a work in 45 days, then how many days would it take 25 men and 15 women to do twice the work ?

If 10 men or 18 women can do a work in 45 days, then how many days would it take 25 men and 15 women to do twice the work ? Correct Answer 27

Here, 10 men's work = 18 women's work , ; 1 " " = 18/10 " " ;, 25 " " = 18× 25/10 " " = 45 women's work (45 + 15) Women's work = 60 women's work 18 women can do in 45 days ;, 1 woman " " " 18× 45 days ;, 60 women " " " 18× 45/60 " = 27/2 days Time needed to done the twice work = 27/2 × 2 = 27 days
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