Single correct option
A can complete a job in 18 days and B can complete the same job in 24 days. They start working together, but A leaves after 6 days. In how many more days will B alone finish the remaining work?
- A. 14
- B. 15
- C. 16
- D. 18
Show answer and solution
Answer: (C) 16
A's 1-day rate = 1/18, B's = 1/24. Work done by A in 6 days = 6/18 = 1/3. Remaining work = 2/3. Time for B to finish 2/3 alone = (2/3)/(1/24) = 16 days. So B alone needs 16 more days after A leaves (total time from start would be 6+16 = 22 days).
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