Question

the traffic lights at three different road Crossings change after every 50 seconds 60 seconds and 72 seconds respectively if they change simultaneously at 8:15 a.m. at what time will they change simultaneously again​

Answer 1

Answer:

8:17

Step-by-step explanation:

find the lcm and add it to the time

Answer 2

Answer:

They will change simultaneously at 8:45 a.m.

Step-by-step explanation:

We just have to find out the LCM of 50 , 60 and 72 and add it to 8:15 a.m.