Math, asked by madhavaJaggi, 1 year ago

Two pipes A and B can fill a tank in 15 minutes and 20 minutes respectively. Both the pipes are opened together but after 4 minutes, pipe A is turned off. What is the total time required to fill the tank?

Answers

Answered by tippu
0
i actually dont know the ans but according to me the ans is 7.5....
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