Question

Two of the lights at the local stadium are flickering. They both just flickered at the same time. One of the lights flickers every 7 seconds and the other light flickers every 8 seconds. How many seconds until both lights will flicker at the same time again?

Answer 1

Answer:

The answer is 56 seconds.

Step-by-step explanation:

In this example,  if two lights at a local stadium are flickering, and at the same time they flicked. both at the same time. and again, one of the lights flickers at every 8 seconds with the other at 7 seconds.

Then,

We apply the lowest common multiple between the two lights.

Furthermore, the LCM refers to the actual numbers multiplied by each of the lights that flicked together.

Therefore the number of seconds till both lights will flicker at same time is

7 * 8 = 56 seconds.

Answer 2

You need to find the first common multiple of both 7 and 8. In this case, the LCM (lowest common multiple) is actually the numbers multiplies by each other, or 56. So the answer is 56 seconds

Hope this helps