Math Reasonings Solved Exercises
Mary and Peter work together on a factory night shift. Mary has one night off every 4 days and Peter has one night off every 6 days. It they go out dancing when their nights off match, how often do they go out dancing together?
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4 days
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6 days
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8 days
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12 days
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24 days
Try to solve it before checking the answer.
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12 days
Indeed, the frequency is the least common multiple (LCM) of 4 and 6, which is 12.