Mathematics

Mathematics, 28.09.2020 21:01, icantspeakengles

One car alarm is set to go off every 10 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 start to 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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