Mathematics, 21.10.2020 22:01 jtrill

Here are three lamps. lamp C
lamp B
lamp A
Lamp A flashes every 20 seconds.
Lamp B flashes every 45 seconds.
Lamp C flashes every 120 seconds.
The three lamps start flashing at the same time.
How many times in one hour will the three lamps flash at the same time?

Answers: 1

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Here are three lamps. lamp C
lamp B
lamp A
Lamp A flashes every 20 seconds.
Lam...