Question

the traffic lights at three different road Crossings change after every 45 seconds 90
seconds and 105 second respectively if they change together at 4:00 a.m. when will they change again together​

Answer 1

Answer:They will change at 4:10:30 a.m.

Step-by-step explanation:

Lcm of 45,90,105=630=10 minutes 30 seconds

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