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Mathematics 14 Online
OpenStudy (anonymous):

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?

OpenStudy (anonymous):

26.72 if you round

OpenStudy (anonymous):

i looked it up on yahoo: http://answers.yahoo.com/question/index?qid=20100512114506AAlysSA

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