A tap can fill a bath in 20 minutes and another tap can fill it in 30 – InterviewSolution

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1.	A tap can fill a bath in 20 minutes and another tap can fill it in 30 minutes . Amit opens both the taps simultaneously. When the both should have been full, he finds that the waste pipe was open. He then closes the waste pipe and in another 4 minutes the bath is full. In what time would the waste pipe empty it?
Answer» 35 MINUTES 38 minutes 36 minutes 39 minutes Answer :C

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