Question

(15) Pipe A can fill a cistern in 5 hours and pipe B can fill it in 6 hours. Both the pipes are opened and after
two hours, pipe A is closed. How much time will B take to fill the remaining part of the tank?please answer asap!!!!!!​

Answer 1

Answer:

MATHS

Pipe A can fill a cistern in 6 hours and pipe B can fill it in 8 hours. Both the pipes are opened and after two hours, pipe A is closed. How much time will B take to fill the remaining part of the tank?

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ANSWER

Part of the tank filled by pipe A and B in 2 hrs.

=2(

6

1

+

8

1

)=2(

24

4+3

)=

12

7

Remaining part =1−

12

7

=

12

5

, This part is filled by pipe B.

∴ Required time =

12

5

×8=

3

10

=3

3

1

hrs.