Question 11
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A and B together finish a job in 6 days, and A alone takes 9 days. How long will B alone take?
- A 3 days
- B 15 days
- C 12 days
- D 18 days Correct
Correct Answer: Option D
B = 1/6 − 1/9 = (3 − 2)/18 = 1/18
B alone = 18 days
Answer: 18 days
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