Civil Service Exam Reviewer · Word Problems · hard
Ana can finish a job in 6 days, Tess in 10 days, and a third worker in 15 days. How long will the job take if all three work together?
- 3 days
- 10.33 days
- 6 days
- 29.03 days
Answer
A. 3 days
Solution
Combined rate = 1/6 + 1/10 + 1/15 = 1/3 job/day → 3 days.
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