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One pipe can fill a tank three times as fast as another pipe. If together the two pipes can fill the tank in 36 minutes, then the slower pipe alone will be able to fill the tank in : | |
A. | 81 min [Wrong Answer] |
B. | 108 min [Wrong Answer] |
C. | 144 min [Correct Answer] |
D. | 192 min [Wrong Answer] |