Question

the traffic light at three different road crossing change after 48seconds,72 seconds and 108 seconds respectivelyif they change simultaneously at 7 a.m at what time they change simultaneously again

Answer 1

Step-by-step explanation:

Explanation: We know that in order to find the time when the three lights will change simultaneously again after 7 a.m., we need to find the LCM of 48, 72, and 108. Hence, converting 432 seconds into minutes and seconds, we get: 432 seconds = 7 minutes and 12 seconds.