Two lights are turned on at the same time. One blinks every 4 seconds and the other blinks every 6 seconds. In 60 seconds, how many times will they blink at the same time
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Step-by-step explanation:
first find LCM of 4 and6 whichever is 12
so they will blink at same time in 12 sec
60/12=5
they will bring together 5 times IN 60 second
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