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Time and Work — quick quiz

4 KPSC Group C-pattern questions on Time and Work. Instant scoring and solutions, no signup — see where you stand in a few minutes.

Question 1 of 4

Hard

A cistern can be filled by two pipes A and B in 8 hours and 12 hours respectively. Pipe C can empty the full cistern in 6 hours. If all three pipes are opened simultaneously, in how many hours will the cistern be filled?