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. In how many seconds will they blink together again? Explain how you got your answer. Need help please, thank you!

Answer 1

When does the other sign blink? After how many seconds?

Answer 2

two neon lights 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 /