Time & Work · Question 25 · Medium
Time & Work question 25
15 workers working 8 hours a day lay 1,200 m of road in 10 days. How many days will 20 workers working 6 hours a day take to lay 1,800 m of the same road?
- 10 days
- 11 1/4 days
- 15 days
- 20 days
Answer and explanation
Answer: C. 15 days
Explanation: Work per worker-hour = 1,200 ÷ (15 × 8 × 10) = 1 m. For 1,800 m, 20 × 6 × D = 1,800, so D = 15 days.
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