Two pipes A and B can fill a tank in 18 minutes and 24 minutes respectively. If both the pipes are opened simultaneously. Then after how much time should pipe B be closed so that the tank is full in 12 minutes?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is Option 3 i.e. 8 minutes
| Understanding | Application | ||||||||||||||
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| Now |
Since work should be complete in 12 minutes So work done by A in 12 minutes = 12 × 4 = 48 unit Remaining work = 72 - 48 = 24 unit |
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| Hence |
The remaining work is done by B = 24/3 = 8 minutes |