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1. |
A tank has two inlets which can fill it in 4 hours and 6 hours, respectively, an outlet can empty the full tank in 8 hours. Both inlet taps are opened for an hour and closed. Then the three pipes are opened together. The remaining part of the tank fills in: |
A. | \(5\frac{1}{3}\) hours |
B. | 2 hours |
C. | \(3\frac{1}{4}\) hours |
D. | 3 hours |
Answer» C. \(3\frac{1}{4}\) hours | |