20 points
One pump can fill a tank of water in 4 hours. A second tank can fill the same tank i...
Mathematics, 06.05.2020 18:00 mmm119
20 points
One pump can fill a tank of water in 4 hours. A second tank can fill the same tank in 3 hours. If both pumps are used together, how long will it take to fill the tank?
7/12 hours
3/4 hours
12/7 hours
4/3 hours
Answers: 1
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