traffic light at 3 road crossing change after every 48 seconds,72 seconds,108 seconds.they change simultaniously at 8 am.what time will they change again?
Answers
Answered by
7
The common multiple between the three numbers is 3456.
48 * 72 = 3456
72 * 48 = 3456
108 * 32 = 3456
So, the next time the lights change simultaneously is 3456 seconds later or 57 minutes 36 seconds later. If it's 7am now, it will change at 7:57 and 36 seconds
48 * 72 = 3456
72 * 48 = 3456
108 * 32 = 3456
So, the next time the lights change simultaneously is 3456 seconds later or 57 minutes 36 seconds later. If it's 7am now, it will change at 7:57 and 36 seconds
Answered by
10
Traffic lights change for every 48, 72, 108 seconds
LCM of 48, 72, 108 is 432
That means, after 432 seconds, all the three lights will changes
That means, after 7 min 12 seconds.
therefore, they will change at 08:07:12 am.
LCM of 48, 72, 108 is 432
That means, after 432 seconds, all the three lights will changes
That means, after 7 min 12 seconds.
therefore, they will change at 08:07:12 am.
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