Posted by **Gracie** on Tuesday, September 18, 2012 at 7:21pm.

The Restaurant's 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 ?

- Math -
**Kyle**, Tuesday, September 18, 2012 at 7:29pm
In 45 seconds.

9,18,27,36.45

15,30,45

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