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A can complete a piece of work in 12 days and B in 18 days. They work together for 4 days, after which A leaves. In how many more days will…

2694Hard UPSC Principal Vice Principal 0 replies 2 views

A can complete a piece of work in 12 days and B in 18 days. They work together for 4 days, after which A leaves. In how many more days will B finish the remaining work?

Correct answer: C

Explanation

In 4 days they complete 4 × (1/12 + 1/18) = 5/9 of the work. The remaining 4/9 takes B (4/9) × 18 = 8 days.

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