If 20 men can build a wall 112 metres long in 6 days, what length of a similar wall can be built by 40 men in 3 days?
Options:
A) 65mtr.
B) 52mtr
C) 70mtr.
D) 112mtr.
E) 17mtr.
20 men is 6 days can build 112 metres   25 men in 3 days can build = 112*(40/20)x(3/6)   = 112 meters   Answer: 112mtr..
<result>D</result>
If 20 men can build a wall 112 metres long in 6 days, what length of a similar wall can be built by 40 men in 3 days?