If 10 men can reap a field in 20 days, how many men are needed to reap the same field in 10 days?
Q1. If 10 men can reap a field in 20 days, how many men are needed to reap the same field in 10 days?
Answer: 20 men
Explanation: The work done is constant, so men * days = constant. 10 men * 20 days = x men * 10 days, giving x = 20 men.