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 by men to finish a piece of work be ‘x’ months

Men	50	125
Time (months)	5	x

We know k = xy

50 × 5 = 125 × x

x = (50×5)/125

= 2

∴ 125 men require 2 months to do a piece of work.