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Mathematics 8 Online
OpenStudy (anonymous):

Kendra has a math test every 12 school days and a vocabulary test every 9 school days. She had both a math test and a vocabulary test today. The next time she will have both tests on the same day will be in ____ school days.

OpenStudy (mikaella.gabriella):

the multiples of 9 are 9,18,27,36,45,... the multiples of 12 are 12,24,36,48,60,... the least common multiple is 36

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