Question

12 men can finish a piece of work in 25 days. The number of days in which the same piece of work can be done by 20 men, is

(a) 10 days
(b) 12 days
(c) 15 days
(d) 14 days

Answer 1

(c) 15 days

It is given that 12 men can finish a piece of work in 25 days.

Let the number of days required to do the same piece of work by 20 men be x days.

We get:

$$\begin{gathered} \frac{20}{12}=\frac{25}{x} \\ x=12\times \frac{20}{25}=15\mathrm{Days} \end{gathered}$$