SOLUTION: Carson drives to school the same way each day, and there are two independent traffic lights on his trip to school. He knows that there is a 30% chance that he will have to stop at

Question 1005147: Carson drives to school the same way each day, and there are two independent traffic lights on his trip to school. He knows that there is a 30% chance that he will have to stop at the first light and an 80% chance that he will have to stop at the second light. What is the probability that he will NOT have to stop at either light? (2 points)

14% is the answer but I don't know why

Answer by fractalier(6550) (Show Source): You can put this solution on YOUR website!
A 30% chance that he will, means 70% that he won't.
An 80% chance that he will, means 20% that he won't.
Now multiply 20% by 70% and you get 14%.
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