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3 pipes a B and C can fill a tank in 6 hours. After working at it together for 2 hours, C is closed and a and B can fill the remaining part in 7 hours. The number of hours taken by C alone to fill the tank is: | |
A. | 10 [Wrong Answer] |
B. | 12 [Wrong Answer] |
C. | 14 [Correct Answer] |
D. | 16 [Wrong Answer] |