vickyshiny vickyshiny

12-11-2016
Mathematics

contestada

Two neon signs are turned on at the same time. Both signs blink as they are turned on. One sign blinks every 9 seconds. The other sign blinks every 15 seconds. In how many seconds will they blink together again? Show Work

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john123aba john123aba

12-11-2016

15+15+15=45
9+9+9+9+9=45

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