TS ICET 24 May 2018 Shift 1 Paper

Question : 97 of 200

Marks: +1, -0

A pipe can fill a tank in 15 hours. Due to a leak in the bottom, it is filled in 20 hours. If the tank is full, how much time will the leak take to empty it?

45 hours
50 hours
40 hours
60 hours

Validate

Solution:

Let the leak take t hours to empty the full tank.
Then

\;{1}/{15}-\;{1}/{t}=\;{1}/{20}⇒\;{1}/{t}=\;{1}/{60}

⇒t=60

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