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Pipe A can fill a tank of capacity 350 l...

Pipe A can fill a tank of capacity 350 litres in `3(1/2)` minutes. Pipe B can fill a tank of capacity 780litres in `8(2/3)`minutes. How long (in min)will it take to fill a tank of capacity 1615 litres, if both pipes are opened together?

A

9

B

`7(1)/(2)`

C

`8(1)/(2)`

D

8

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GAGAN PRATAP -PIPE & CISTERN-MULTIPLE CHOICE QUESTION
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  11. Pipes P and Q can fill a tank in 18 and 27 minutes, respectively, wher...

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  12. Pipes A and B are filling pipes while pipe C is an emptying pipe A and...

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  13. Pipes A, B and C together can fill a cistern in 12 hours. All the thre...

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  14. Pipes A, B and C can fill a tank in 10, 15 and 30 hours, respectively....

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  15. Pipe A and B can fill a tank in 16 hours and 24 hours respectively whe...

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  16. Two pipe A and B can fill a tank with water in 42min and 35min respect...

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  17. Two taps A and B can fill a tank in 48 min. and 36 min. If both taps a...

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  18. Three pipes, A, B, C can fill an empty cistern in 2, 3 and 6 hours res...

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  19. Pipe A can fill a tank in 16 minutes and pipe B emptics it in 24 minut...

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  20. An empty cistern has three pipes A, B and C. A and B can fill it in 45...

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