Question

60 men can complete a work in 40 days. They start work together but after every 10 day, 5 men leave the work. In how many days will the work be completed?

• A. 47.5
• B. 49.5
• C. 42.5
• D. 45.5

Answer 1

Answer:

A. 47.5

Total workload = 60 × 40 = 2400 60 men did the work in 10 days = 600 55 men did the work in 10 days = 550 50 men did the work in 10 days = 500 45 men did the work in 10 days = 450 Total work units left = 2400 – (600 + 550 + 500 + 450) = 2400 – 2100 = 300 40 men will do 300 units in = 300/40 = 7.5 Total number of days to finish the work = 40 + 7.5 = 47.5 days