15 men were hired to plough a land in 10 days. How many more men are needed to do it in 3 days?
15 men were hired to plough a land in 10 days. How many more men are needed to do it in 3 days?
A: 30
B: 35
C: 50
D: None of these
Total work is 15 men × 10 days = 150 man-days. For 3 days work requires 150 ÷ 3 = 50 men. Additional men needed