Latest general Aptitude Question SOLUTION: A large water tank has two inlet pipes (a large one and a small one) and one outlet pipe. It takes 3 hours to fill the tank with the large inlet pipe. On the other hand, it takes 5

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(#M40007776) GENERAL question Keep an EYE

A large water tank has two inlet pipes (a large one and a small one) and one outlet pipe. It takes 3 hours to fill the tank with the large inlet pipe. On the other hand, it takes 5 hours to fill the tank with the small inlet pipe. The outlet pipe allows the full tank to be emptied in 7 hours.

What fraction of the tank (initially empty) will be filled in 2.85 hours if all three pipes are in operation? Give your answer to two decimal places (e.g., 0.25, 0.75).

Asked In general Vignesh (12 years ago)

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Sukham  (12 years ago)

In 2.85 hrs , tank will be full.

as tank is filled in

1/( 1/3 +1/5 -1/7) = 105/41 hrs = 2.56 hrs.

so water will be overflowing.

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Rakesh Kumar Kohli  (12 years ago)

Ans: The tank will will be overflowing in 2.85 hrs as the tank will be full in 2.56 hours.

Solution :
If all the three pipes are in operation then in one hour the part of the tank will be filled = 1/3 + 1/5 - 1/7 = 41/105

So the tank will be filled in 105/41 hrs = 2.56 hrs.

It means water will be overflowing from tank after 2.56 hrs.

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MP   (12 years ago)

In 2.85 hrs, tank is full.
so 1.00

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