If 120 men build a building in 30 days, how long will 80 men take?
If 120 men build a building in 30 days, how long will 80 men take?
Explanation
Work = Men × Days = 120 × 30 = 3600 man-days
If 80 men work: 3600 ÷ 80 = 45 days
Work = Men × Days = 120 × 30 = 3600 man-days
If 80 men work: 3600 ÷ 80 = 45 days