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3 years ago

8

a red string of holiday lights blinks once every 3 seconds while a string of blue lgihts blink once every 4 seconds. how many ti

mes with both sets of lights blink at the same time in 1 minute

1 answer:

gavmur [86]3 years ago

6 0

The highest common factor of 4 and 3 is 12
one minute has 60 secs
thus it will blink 60/12=5 times

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