Question

15. A tank can be filled by a pipe A in 6 hours
and emptied by another pipe B in 10 hours.
After 3 hours the pipe B is closed. How
much time will the pipe A take to fill up the
remaining part of the tank?

Please answer fast.

Answer 1

Answer:

7 1/2hrs

Step-by-step explanation:

1-(1/6-1/10)3

1-1/5

=4/5

time required=5/4×6=15/2=7hrs 30mins

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Answer 2

Answer:

4 hours 48 minutes

Step-by-step explanation: