A spotlight at a dance club flashes every 25 seconds. Another spotlight flashes every 30 seconds. Both lights just flashed . Aft
er how many minutes will both lights flash at the same time again?
2 answers:
find the least common multiple of 25 and 30, which is 150
so they will flash at the same time every 150 seconds which equals 2.5 minutes
150 seconds for both the lights to flash.
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