Q7 of 65 Page 13

There are two pipes in a water reservoir of our school. Two pipes together take minutes to fill the reservoir. If the two pipes are opened separately, then one pipe would take 5 minutes more time than the other pipe. Let us write by calculating the time taken to fill the reservoir separately by each of the pipes.

Let time taken by one pipe to separately fill the reservoir be x.

therefore, time taken by another pipe be x + 5.


As, portion filled by one pipe in one min =


portion filled by another pipe in one min =


According to question,












So the time taken to fill the reservoir by first pipe is 20 hrs and second pipe is 25 hrs.


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