A contractor undertake to do a piece of work in 40 days. He engages 100 men at the beginning and 100 more after 35 days and completes the work in stipulated time. If he had not engaged the work in men, how many days behind the scheduled the work should have been finished ?

A. 5

B. 6

C. 7

D. 8

Answer: Option A

Solution(By Examveda Team)

100 men's 40 day's work + 100 men's 5 day's work = 1
⇒ 100 men's 45 day's work = 1
So, if the contractor had not engaged additional men, 100 men would have finished the work in 45 days.
Difference in time = (45 - 40) = 5 days