Mathematics, 31.07.2019 20:40 username999990
Two grandparents want to pick up the mess that their granddaughter had made in her playroom. one can do it in 15 minutes working alone. the other, working alone, can clean it in 12 minutes. how long will it take them if they work together?
Answers: 1
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Two grandparents want to pick up the mess that their granddaughter had made in her playroom. one can...
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