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A, B, C are three pipes attached to a ci...

A, B, C are three pipes attached to a cistern. A and B can fill it in 20 min and 30 min respectively while C can empty it in 15 min. If A, B, C kept open successively for 1 min each, how soon the cistern will be filled?

A

167 min

B

160 min

C

166 min

D

164 min

Text Solution

Verified by Experts

The correct Answer is:
A
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