Q: 2/5th part of tank A is filled with water. Pipe P can fill it in 10 minutes, while pipe Q can empty it in 6 minutes. If P and Q are opened together, then in how much time tank will be emptied?
A.
6 minute
B.
6.5 minute
C.
5.5 minute
D.
7 minute
Correct Answer:
Option A -
Explanations:
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