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There are ten taps fitted to a tank. The...

There are ten taps fitted to a tank. The filling taps that are filling the tank are five in number adn each takes 5 hours to fill the tank. The emptying taps are alos five in number each tap takes 6 hours to empty to tank. In how many hours can the empty tank be filled, if all the taps are opened simultaneously?

A

6

B

5

C

10

D

2

Text Solution

Verified by Experts

The correct Answer is:
A
Take filling work as positive and emptying work as negative
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