Question

Pipe A fills the tank in 4 hours , Pipe B empties the tank in 6 hours. How long will it take to fill the tank if both the taps are opened together

Answer 1

Answer:

time taken to fill the tank by pipe A = 4 hrs

1 hr filled part = 1/4

time taken to empty the tank by pipe B = 6 hrs

1 hr emptied part = 1/6

time taken by both to fill the tank :-

1/4 - 1/6

3-2 /12

1/12

= 12 hrs will be taken by both to fill the tank

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Answer 2

Answer:

The actual answer is 2.4 hours

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