Middle School

There are 2 flashlights, one flashes every 3 seconds and the other flashes every 4 seconds. If they last flashed together at 10:40 AM, when will they flash together next?

Answer :

Answer: 10:52 AM

Step-by-step explanation:

If you find the LCM of the numbers, and then add it to the last time they flashed together, you will have your answer.

Answer:

It is still 10:40:12 am

Step-by-step explanation:

First find the Lcm. That will be 12. 12 cannot be converted into minutes so it will be in seconds. So it will flash again 12 seconds later...

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