Tap 'A' can fill a tank in 24 minutes while tap 'B' can fill it in 48 minutes. If both the
taps are opened together, in how much time will the tank be filled in ?
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In 1 hour tap A can fill the tank by 1/24 part.
In 1 hour tap B can fill the tank by 1/48 part.
So, In 1 hour (A+B) can fill the tank by 1/24 + 1/48 = (4+2)/56 = 6/56 part.
So, the tank can be filled in 56/6 = 9 hours and 20 minutes when both pipe A and pipe B are open.
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