Question

A pipe can fill an empty cistern in 36(4/11) minutes

Q: Answer-A pipe can fill an empty cistern in 36(4/11) minutes when working alone. However, due to a leak, it...

Let the capacity of the tank L.C.M of 36411 and 50 400 units Then, efficiency of the pipe alone 400 36411 400 40011 11 unitsminute Combined efficiency of the pipe and the leakage 400 50 8 unitsminute So, efficiency of the leak alone 8 - 11 3 unitsminute outlet 30 of the cistern 400 X 0.3 120 units Time taken by the leak alone to empty 30 of the cistern 120 3 40 minutes

when working alone. However, due to a leak, it takes 50 minutes to fill the same cistern. Find the time it takes for the leak to empty 30% of the cistern on its own.

A 36 minutes

B 45 minutes

C 60 minutes

D 40 minutes

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A pipe can fill an empty cistern in 36(4/11) minutes

Solution