Mathematics, 27.09.2019 00:00 quintink
A cold-water faucet can fill a sink in 1212 min, and a hot-water faucet can fill it in 1515 min. the drain can empty the sink in 2525 min. if both faucets are on and the drain is open, how long will it take to fill the sink?
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A cold-water faucet can fill a sink in 1212 min, and a hot-water faucet can fill it in 1515 min. the...
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