60 men can do a work in 40 days. How long will it take 40 men to complete the same work?

🧠 Explanation (Math):

Given: 60 men → 40 days; 40 men → ?
Step 1: Man-days = 60 × 40 = 2400
Step 2: Time = 2400 ÷ 40 = 60 days
Final Answer: 60 days