36 men can complete a piece of work in 18 days. In how many days will 27 men complete the same work?

Question:
36 men can complete a piece of work in 18 days. In how many days will 27 men complete the same work?

[A].

12

[B].

18

[C].

22

[D].

24

Answer: Option D

Explanation:

Let the required number of days be x.

Less men, More days (Indirect Proportion)

27 : 36 :: 18 : x       27 x x = 36 x 18

x =	36 x 18
	27

x = 24.