Mathematics, 20.09.2020 06:01 suselygonza

One car alarm is set to go off every ten seconds. Another car alarm is set to go off every 5 seconds, and a third car alarm is set to go off every 4 seconds. If they all go off at the same time due to a loud clap of thunder, how long will it take until they all sound at the same time again?

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One car alarm is set to go off every ten seconds. Another car alarm is set to go off every 5 seconds...