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A pipe Can fill a tanke in 10 hours. The...

A pipe Can fill a tanke in 10 hours. The other pipe can fill a tank in 15 hours. How much time will they take to fill that tank together.

A

3 hours

B

3.13hours

C

4 hours

D

4.7 hours

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The correct Answer is:
B
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MOTHERS-TIME & WORK-MULTIPLE CHOICE QUESTIONS
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  2. There are three pipes A, B and C which can fill a tank in 10 hours, 15...

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  3. A cistern can be filled by two pipes in 30 min and 36 min respectively...

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  4. A, B, C are three pipes attached to a cistern. A and B can fill it in ...

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  5. Two pipes are running continuously to fill the tank. The 1st pipe has ...

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  6. If A & B can fill a tank in 10 hours and 15 hours respectively. An out...

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  7. In how many hours, would a cistern get filled by 3 pipes running toget...

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  8. Three pipes A, B, C are attached to a cistern. Pipe A and B can fill t...

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  9. A pipe Can fill a tanke in 10 hours. The other pipe can fill a tank in...

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  10. Two pipes can fill a tank in 15 and 12 hours respectively and third pi...

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  11. Two pipes A and B together can fill a tank in 4 hours. B takes 6 more ...

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  12. A water tank has three taps A, B and C. A fills four buckets in 24 min...

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  13. There is a leak in the bottom of the tank. This leak can empty a full ...

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  14. The radius of the cross-sections of pipes P(1) and P(2) are 7 m and 14...

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  15. A chemical plant has four tanks (A, B, C and D), each containing 1000 ...

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  16. Two pipes A and B together can fill a tank in 5 days. If A fill twice ...

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  17. A swimming pool has 3 outlets. A and B together take half the time of ...

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  18. In a tank 1^(st) pipe can fill 1/2 of a tank in 1 hour, 2^(nd) pipe ca...

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  19. Two pipes can fill a tank in 15 and 12 hours respectively and third pi...

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  20. Two pipes A and B can fill a tank in 24 minutes and 40 minutes respect...

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