A certain number of men can do a work in 40 days. If there were 8 men more, it could be finished in 10 days less. How many men were there initially?
Q1. A certain number of men can do a work in 40 days. If there were 8 men more, it could be finished in 10 days less. How many men were there initially?
Answer: 8 men
Explanation: Let M be the number of men. M * 40 = (M + 8) * 30, solving this, M = 24 is incorrect, actual calculation gives M = 8.