- A50 men
- B20 men
- C30 men
- D25 men
Step-by-Step Solution
Half = 500 man-days, so the job is 1000. Left 500 in 10 days: 50 men, i.e. 25 extra.
Answer: D) 25 men
25 men were to finish a job in 30 days. After 20 days only half was done. How many extra men are needed to finish on time?
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