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Two pipes A and B can fill a cistern in ...

Two pipes A and B can fill a cistern in 20 minutes and 25 minutes respectively Both are opened together at the end of 5 minutes B is turned off What is the total time taken to fill the cistern ?

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16 min
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S CHAND IIT JEE FOUNDATION-TIME AND WORK -Self Assessment Sheet - 13
  1. Two pipes A and B can fill a cistern in 20 minutes and 25 minutes resp...

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  2. A alone can complete a piece of work in 6 days and B alone can complet...

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  3. Kamal can do a work n 15 days. Bimal is 50% more efficient than Kam...

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  4. A man and a boy can do a piece of work in 24 days. If the man works...

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  5. A and B together can do a piece of work in 6 days. A alone can do it i...

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  6. A' can do a piece of work in 4 days and B in 12 days. In how many days...

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  7. Two men undertake to do a piece of work for Rs. 1400. The first man...

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  8. A and B can do a piece of work in 8 days, B and C can do the same work...

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  9. Two taps can fill a tub in 5 minutes and 7 minutes respectively. A pip...

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  10. A man completes 4/9 of a job in 12 days. At this rate, how many more d...

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  11. Three workers, working all days can do a work in 10 days, but one of t...

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  12. A tap fills a tank in 12 hours and the other empties it in 24 hours. I...

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  13. If 15 pumps of equal capacity can fill a tank in 7 days, then how many...

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  14. A tap can fill a tank in 6 hours. After half the tank is filled, th...

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  15. If three taps are opened together, a tank is filled in 12 hours. One o...

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  16. A can do a work in 18 days, B in 9 days and C in 6 days. A and B start...

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