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Mathematics 14 Online
OpenStudy (anonymous):

Thomas takes a break from his work every 20 minutes while Elaine takes a break every 30 minutes. How often do they take a break at the same time assuming that they start work together?

OpenStudy (anonymous):

you only need to calculate the mcm of these numbers |dw:1436149316602:dw| |dw:1436149374783:dw|

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