Question

15 men can complete a task in 10 days. In how many days can 20 men complete the same task?5.5 days

• A. 5.5 days
• B. 7.5 days
• C. 6.5 days
• D. 8.5 days

Answer 1

Answer:

B. 7.5 days

Solution: Given: 15 men can complete a task in 10 days. Formula: M1 × D1 = M2 × D2 Calculation: M1 = 15, D1 = 10 and M2 = 20 According to the formual 15 × 10 = 20 × D2 ⇒ D2 = 150/20 ⇒ D2 = 7.5 days ∴ 20 men can complete the same task in 7.5 days.