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A tank is connected with four pipes A, B...

A tank is connected with four pipes A, B, C and D of which two are filling the tank and other two are emptying it. The time taken by A, B, C and D to finish their jobs are 10 hours, 15 hours, 20 hours and 30 hours respectively. All four pipes are opened. When the tank was empty, it took 12 hours to fill it completely. Which two are the outlet pipes?

A

A and B

B

C and D

C

A and C

D

B and D

Text Solution

Verified by Experts

The correct Answer is:
B
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  9. Pipe A can fill a tank in 12 hours and pipe B can fill it in 15 hours,...

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  14. In a public bathroom there are n taps 1, 2, 3... n. Tap 1 and tap 2 ta...

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  15. Pipe A takes 3//4 of the times required by pipe B to fill the empty ta...

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  16. A contractor undertook a project to complete it, in 20 days which need...

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