A certain number of men can finish a piece of work in 100 days. If there were 10 men less, it would take 10 days more for the work to be finished. How many men were there originally ?

A 75

B 82

C 110

D 100

Correct Answer: Option C

Solution: Originally let there be x men.

Then, x man need = 100 days 1 man need = 100x days x - 10 man need = 100x / x-10 days

ATQ,

100x / x-10 = 110

or, 100x = 110x - 1100 or 10x = 1100 x = 110