Mechanical Engineering > GATE 2014 SET-2 > Time and Work
It takes 30 minutes to empty a half-full tank by draining it at a constant rate. It is decided to simultaneously pump water into the half-full tank while draining it. What is the rate at which water has to be pumped in so that it gets fully filled in 10 minutes?
A
4 times the draining rate
B
3 times the draining rate
C
2.5 times the draining rate
D
2 times the draining rate

Correct : a

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