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aliya0001 [1]
3 years ago
8

One pipe fills an empty tank in 3 hours. A second pipe fills the same tank in 6 hours. A third pipe can empty the full tank in 5

hours. If all three valves were left open, how long would it take to fill the empty tank?
Mathematics
1 answer:
aleksklad [387]3 years ago
7 0
6 would be your answer
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