Question

A work force of 50 men with a contractor can finish a piece of work in 5 months. In how many months the same work can be completed by 125 men?

Answer 1

Let the number of months required is x. As number of men increases the days to complete the work decreases. Hence it is a inverse proportion.

Men	50	125
Time(months)	5	x

50 x 5 = 125 x x

x = \(\frac{50\times 5}{125}\) = 2

Therefore the number of months required to complete the work is 2 months