In a beach the red light flashes every 12 minutes,the green light flashes every 18 minutes .At 6:30 red and green light flash together for the second time.When did it flashe together for the first time?
bijimol:
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The time when the two lights would blink together would be the LCM of 12 and 16
ie. 36 minutes
So, the first time these lights flashed together would be 36 minutes before 6:30
= 5:54 is the answer
Don't forget to thank me it was helpful :).
ie. 36 minutes
So, the first time these lights flashed together would be 36 minutes before 6:30
= 5:54 is the answer
Don't forget to thank me it was helpful :).
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0
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