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Mathematics, 25.09.2019 13:30 HaPow9735

One person can do a certain job in ten minutes, and another person can do the same job in fifteen minutes. how many minutes will they take to do the job together?
if x represents how many minutes to do the job together, then how much of the job does the slowest person do?
1. x/15
2. x/10
3. 15/x

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