Pipes and Cisterns Practice Test 2 with solutions

Question : 18 of 40

Marks: +1, -0

An inlet pipe can fill an empty cistern in 40 minutes, whereas a leakage at the bottom can empty the tank in 2 hours. Find the time taken to fill the tank if both the inlet pipes and leakage work together?

$1 1/2$ hour
58 minutes
1 hour
62 minutes
80 minutes

Validate

Solution:

Part of cistern filled in 1 minute =

1/{40}-1/{120}

{3-1}/{120}

2/{120}

1/{60}

So, the entire cistern is filled in 60 minutes = 1 hour.

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