Mathematics
Mathematics, 12.06.2020 13:57, lnelson9127

There are two sets of traffic lights outside Eric's house. One day, he times how often they change. Set A turns green every 60 seconds. Set B turns green every 70 seconds. At midday precisely they both turn green together. At what time will they both turn green together again?

Pls I need help, I'm stuck

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There are two sets of traffic lights outside Eric's house. One day, he times how often they change....

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