Pipe A is capable of filling a tank in 16 minutes while Pipe B can fill the same tank in 24 minutes. Both pipes are opened together, but after 4 minutes, the rate of Pipe A doubles and the rate of Pipe B becomes half of its original. How many more minutes will it take to fill the tank completely?

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Apedia · Accepted Answer

Correct Answer: 4 min.

Explanation: Capacity = 48. A=3, B=2. After 4 mins, filled = 20. Remaining = 28. New A=6, New B=1. Total rate = 7. Time = 28/7 = 4 mins.[span_54](start_span)[span_54](end_span)...

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Pipe A is capable of filling a tank in 16 minutes while Pipe B can fill the same tank in 24 minutes. Both pipes are opened together, but after 4 minutes, the rate of Pipe A doubles and the rate of Pipe B becomes half of its original. How many more minutes will it take to fill the tank completely?