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marishachu [46]
3 years ago
5

a light flashes every 2 minutes, a second light flashes every 3.5 minutes and a third light flashes every 4 minutes. if all thre

e lights flash together at 8 p.m what us the next time of the day they will all flash together
Mathematics
1 answer:
scoray [572]3 years ago
4 0
Take the LCM of the three numbers. Since 2 is a multiple of 4, you can ignore the two and just take the LCM of 4 and 3.5. Since 3.5 is a decimal, the LCM is just 3.5*4 which is 14. That is how many minutes after 8:00 they will flash together again.<span />
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