Question

A red-light flashes every 28 seconds. A green light flashes every 24

Answer 1

Answer:

168 seconds

I edited the answer.

Step-by-step explanation:

To find the the time taken for both lights to flash at the same time, we need to find the lowest common multiple of 28 and 24.

28 x 6 = 168, 24 x 7 = 168

The LCM of 28 and 24 is 168.

So it takes 168 seconds for both lights to flash at the same time.

Answer 2

Answer: 168 seconds

Step-by-step explanation:

We must find the common lowest multiplier or lowest numbers that multiply both the numbers to be equal to eachother