Question

Help!! I'm confused.​

Answer 1

Every 12 seconds

Explanation:

You must find the LCM (Least common denominator)

4 x 3 = 12

Because 3 goes into 6 and 4 is four so the LCM is 12

Answer 2

12 seconds

Explanation:

we need to find the Lcm which is 12
they both flash after 12 seconds