Work efficiency and pipes/cisterns.
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Q1 · Time & Work · EASY
A can complete a work in 12 days and B can complete the same work in 18 days. If they work together, in how many days will they complete the work?
Q2 · Time & Work · MEDIUM
A pipe can fill a tank in 20 hours. Due to a leak at the bottom, it takes 25 hours to fill the tank. If the tank is full, how long will the leak take to empty it?
Q3 · Time & Work · MEDIUM
12 men can complete a piece of work in 16 days. 16 women can complete the same work in 24 days. In how many days will 8 men and 8 women together complete the work?
Q4 · Time & Work · HARD
A, B and C can complete a work in 10, 12 and 15 days respectively. They started working together but A left after 2 days and B left 1 day before the completion of the work. In how many days was the work completed?
Q5 · Time & Work · MEDIUM
A and B together can complete a work in 12 days. B and C together can complete it in 15 days. A and C together can complete it in 20 days. In how many days can A alone complete the work?