- A16 days
- B18 days
- C20 days
- D12 days
Step-by-Step Solution
Man-hours per metre: . 480 m needs 2304 man-hours; per day : 16 days.
Answer: A) 16 days
12 men working 8 hours a day dig a 360 m trench in 18 days. In how many days will 16 men working 9 hours a day dig 480 m?
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