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Mathematics
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An inlet pipe can fill a tank in 10 minutes. A drain can empty the tank in 12 minutes. If the tank is empty and both pipe and drain are open, how long will it be before the tank overflows?
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Total Volume = volume in - volume out each minute. Tv = 1/10 - 1/12 per minute. Tv = (12 - 10)/120 = 2/120 = 1/60 per minute. After 60 minutes, the tank should be overflowing.
Excellent answer amistre64! Wow.
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