Question
A can complete a task in 10 days, and B can complete it
in 15 days. After 3 days of working together, B leaves. How many more days will A take to finish the remaining work?Solution
Combined 1-day work of A and B = 1/10 + 1/15 = 1/6 Work done in 3 days = 3 × 1/6 = 1/2 Remaining work = 1/2 A’s 1-day work = 1/10 Days taken by A = (1/2)/(1/10) = 5 days
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