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The two neon lights are turned on at the same timeBoth signs blink as they are turned on one every nine seconds the other blinks every 15 seconds in how many seconds will they blink together again?
Wiki User
∙ 14y ago
15+15+15=45, 9+9+9+9+9=45
They will blink together in 45 seconds. the 9-second one will have blinked 5 times and the 15-second one will have blinked 3 times.
Wiki User
∙ 14y ago
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