If 45 men can do a work in 30 hours, then in how many hours will 20 men do the same work?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 67.5
Given that
45 men can do a work in 30 hours
Let 20 men do the same work in D hours
According to the question
⇒ 45 × 30 = 20 × D
⇒ D = 67.5 hours