Asked by nick

One sign blinks every
9 seconds. The other sign blinks every 15 seconds. In how many
seconds will they blink together again




















































































Answered by Ms. Sue
What is the least common multiple of 15 and 9?

Answered by chloe
45 is the common multiple
Answered by Cloie
The manager turns on the restaurant's two neon signs 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?
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