Mathematics, 23.10.2019 22:00 queentynaisa
machine a can fill a bucket from a pipe in 4 minutes. however, machine b can empty the bucket in 6 minutes. starting from empty, if the machines are going at the same time, how long will it take to fill the tank?
Answers: 2
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machine a can fill a bucket from a pipe in 4 minutes. however, machine b can empty the bucket in 6 m...
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