Three bulbs red, green and yellow flash at intervals 80 seconds, 90 seconds and 110
seconds. All three flash together at 8:00 am. When will these three bulbs flash together
again?
Answers
Answered by
1
they will flash together at LCM of (80,90,11) that is after 7930 seconds= 2 hours 12 minutes
Answered by
6
Answer:
2 hr 12 min
Step-by-step explanation:
LCM of 80 90 and 110= 7920seconds
= 7920/60= 132 min
Hence they will flash together next after 2 h 12 min i.e, at 10:12am
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