Question

The traffic light at the center of town is green for 45 seconds, then yellow for 5 seconds, then red for 40 seconds, at which point the cycle repeats. If a car approaches the traffic light at a random time, what is the probability that the traffic light will be green?

a. 1/9
b. 1/8
c. 1/2
d. 8/9

Answer 1

C.

Explanation:

Answer 2

C, 1/2 of the time.

Explanation:

all the seconds added together is 90. 45 is half of 90, so half the time the light will be green, the cars will have a 50% chance of coming up to a green light.