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A tap can fill a bath in 20 minutes and ...

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?

A

35 min

B

36 min

C

38 min

D

39 min

Text Solution

Verified by Experts

The correct Answer is:
C
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