Work efficiency and pipes-and-cisterns.
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Q1 · Time and Work · MEDIUM
A and B together can complete a work in 12 days. A alone can do it in 20 days. In how many days can B alone complete the work?
Q2 · Time and Work · EASY
A can complete a work in 15 days and B can complete the same work in 20 days. If they work together, in how many days will they complete the work?