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A Pipe can fill a tank in 10 hours. Due to leak in the bottom it fills the tank in 30 hours. If the tank is full, how much time will the leak take to empty it

A12 hours

B15 hours

C14 hours

D13 hours

Answer:

B. 15 hours

Read Explanation:

=(x * y) / (x - y) =(10 * 30) / (30 - 10) =300 / 20 = 15 hours


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