Question

10. Pipe A can fill a cistern in 5 hours and pipe B in 10 hours. Both the pipes are opened together and after 2 hours pipe A is closed, how much time will the pipe B take to fill up the remaining part of a tank?

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Answer 1

Answer:

6 hours

Step-by-step explanation:

pipe b is 2 times than a

so 2hours multiply by 2 =4

it takes 10hours to fill a tank by pipe b so 10 - 4=6