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OpenStudy (anonymous):
a traffic light is red for 25 sec, yellow for 5 sec, and green for 55 sec. What is the probability that when you reach the light, the light is not green
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OpenStudy (anonymous):
It takes 85 seconds for the light to cycle. 30 of those seconds are when the light is not green. Thus, the probability is 30/85 or apprx. 35%
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