- A20 more
- B40 more
- C10 more
- D30 more
Step-by-Step Solution
240 man-days = 60%, so the job is 400. Left 160 in 4 days: 40 men, i.e. 20 more.
Answer: A) 20 more
20 men do 60% of a job in 12 days. How many more men are needed to finish the rest in 4 days?
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