1.  10 men can make a wall in 8 days. How many men required to complete the same work in half days ?
A. 80
B. 100
C. 120
D. 160

Answer: Option D

Explanation:

Given M1 = 10

D1 = 8, M2= ? and D2 = 1/2

From M1 D1 = M2 D2

⇒ 10 x 8 = M2 x 1/2

⇒ M2= 10 x 8 x 2

∴ M2 = 160