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a manager turns on the restaurants two neon signs at the same time. both signs blink as they are turned on. one sign blinks every 20 seconds and the other blinks every 15 seconds. in how many seconds will they blink together again?
9 years ago

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Ms. Sue
What is the least common multiple of 20 and 15?

9 years ago
Anonymous
20 + 15 =35
9 years ago

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