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on a remote controlled racing track, car a completes a lap every 15 seconds and car B compeletes a lap every 12 seconds. if they both start side by side at the starting time how many seconds will it take them to be side by side again?

User HighFlyer
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i may not help. But i believe it is something to do with the lowest common multiple between those 2 being 60
User Parvez Belim
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