Question

If 36 men can do a piece of work in 25 hours, in how mwny hours will15 men do it?
A) 40
B) 50
C) 60
D) 70

Answer 1

60 hours ................

Answer 2

15:36 ::25:x   (15 x X)=(36 x 25)   

= x =36 × 25 / 15 =60

Hence, 15 men can do it in 60 hours.