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1. A does a work in 10 days and B does the same work in 15 days. In how many days they together will do the same work?
- A. 5 days
- B. 5 days
- C. 5 days
- D. 5 days
Answer: Option B
Explanation:
Hints: A and B in 1 day together work ( 1/10 + 1/15) portion = (3 + 2)/30 = 5/30 = 1/6
Together they finish in 6 days.
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