Question

please tell please fat​

Answer 1

Answer:

LCM of 48 , 72 and 108 is 432.

Hence, lights will be changed after 432 seconds.

Therefore as it last changed at 7:00 a.m.

so it will be changed after 432 seconds of 7:00 a.m.

so they will be simultaneously changing at 07:04:32 respectively.

mark it brainliest answer