Three taps P, Q and R can fill a tank in 12 hrs, 15 hrs and 20 hrs respectively. If P is open all the time and Q and R are open for one hour each alternately, starting with Q, then the tank will be full in how many hours

Comments and Answers (2)

Lavish

Lavish

please post an explanation

Saurabh

Saurabh

anyone have any solutions

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