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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

Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Tap A fills a tank in 10 hours and B can fill it in 15 hours. Both are...
Tap A worked for all time so work done = 8 × 3 = 24
Remaining work = 30 –24 = 6
Time taken by tap B = 6/2
so tap B was closed after 3 hrs.
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Most Upvoted Answer
Tap A fills a tank in 10 hours and B can fill it in 15 hours. Both are...
Tap A worked for all time so work done = 8 × 3 = 24
Remaining work = 30 –24 = 6
Time taken by tap B = 6/2
so tap B was closed after 3 hrs.
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Community Answer
Tap A fills a tank in 10 hours and B can fill it in 15 hours. Both are...
Tap A worked for all time so work done = 8 × 3 = 24
Remaining work = 30 –24 = 6
Time taken by tap B = 6/2
so tap B was closed after 3 hrs.
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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)2b)3c)4d)5Correct answer is option 'B'. Can you explain this answer?
Question Description
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