tap a fills a tank in 4 hours and another tap b empties in 6 hours .if the tank is empty and both taps are opened. togeather how long will it tale to fill tank
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tap a fills a tank in 4 hours and another tap b empties in 6 hours .if the tank is empty and both taps are opened. togeather how long will it tale to fill tank
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Answer:
In one hour tap A can fill 1/4 of tank.
In one hour tap B can emply 1/6 of tank.
In one hour tap A and tap B (both open) can fill 1/4 - 1/6 of the tank OR 1/12 of the tank
Thus time taken to fill 1/12 of tank = 1 hour
Therefore,
Time taken to fill full (1) tank = 1 X 1 divided by 1/12
OR 12 hours
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