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What is the probability of getting a green light at a signal if it is green for 20 seconds then yellow for 5 seconds then red for 25 seconds?
Wiki User
∙ 14y ago
This is like a marble problem, selecting a normal time at a standard traffic light, looking for the green light time. Adding all the times, we have 20 + 5 + 25 = 50. Now, 20 of those 50 seconds are green, thus, the probability is "good/total", which is 20/50 = 2/5 = .4 or 40%.
Wiki User
∙ 14y ago
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What is the probability that the second tile you pick is yellow? (didnt have enough space to finish the question)
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because yellow is awesome
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