HSSC CET · Quantitative Ability
Work efficiency, pipes-and-cisterns and group work.
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Q1 · Time and 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 and Work · MEDIUM
A pipe can fill a tank in 6 hours and another pipe can empty it in 8 hours. If both pipes are opened together when the tank is empty, in how many hours will the tank be filled?
Q3 · Time and Work · MEDIUM
12 men can complete a piece of work in 16 days. After 8 days of work, 4 more men joined them. In how many more days will the work be completed?
Q4 · Time and Work · HARD
A and B together can complete a work in 12 days. A alone can complete it in 20 days. After A and B worked together for 8 days, B left and A completed the remaining work alone. In how many total days was the work completed?
Q5 · Time and Work · MEDIUM
A and B can complete a work in 12 days. B and C can complete the same work in 15 days. A and C can complete it in 20 days. In how many days can all three working together complete the work?