A certain number of persons can complete a work in 54 days. If there were 15 persons less, it would take 18 days more for the work to be completed. Initially, the number of persons is:
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 60
Let initially, The number of person = x
According to the question
x × 54 = (x - 15) × (54 + 18)
54x = 72x - 1080
72x - 54x = 1080
18x = 1080
x = 60 days