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Tap a fills a tank in 10 hours and B can...

Tap a fills a tank in 10 hours and B can fill it in 15 hours. Both are opened simultaneously. Sometimes later tap B was closed, then it takes total 8 hours to fill up the whole tank. After how many hours B was closed?

A

2

B

3

C

4

D

5

Text Solution

Verified by Experts

The correct Answer is:
B
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ARIHANT SSC-TIME AND WORK-EXERCISE(LEVEL 1)
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  15. Tap A can fill a tank in 20 hours, B in 25 hours but tap C can empty a...

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  16. If one pipe A can fill a tank in 20 minutes, then 5 pipes, each of 20%...

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  17. Pipe A basically used as inlet pipe and pipe B is used as outlet pipe....

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