A light blinks after every 3 seconds, another light blinks after every 5 seconds and the third one blinks after every 16 seconds. How many times do they blink together in half an hour.
Answers
Answered by
3
Answer:
7 times
Step-by-step explanation:
we have to find l.c.m.
that is 240 sec = 4min
30min ÷ 4min = 7.5
they will blink together 7 times
Answered by
1
Step-by-step explanation:
I think this is correct
hope it helps you
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