- A6 days
- B8 days
- C2 days
- D4 days
Step-by-Step Solution
Left: worker-days for 15 workers = 8 days (not 12). Earlier by 4 days.
Answer: D) 4 days
A group of 10 workers is to finish a job in 20 days. After 8 days, 5 more join. How many days earlier than planned does the job finish?
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