Three taps, A, B and C, can fill up an empty tank in 6 hours, 8 hours and 12 hours,respectively. After two hours, taps A and B are closed. How much time will Tap C take to fill the remaining part of the tank?
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Answer:
20 hours
Step-by-step explanation:
6, 8, 12 minus
2 2 2= 4, 6, 10
4+6+10=20
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