A traffic light turns green for cars in one direction for 30 sec It is green for cars in the other direction for 25 sec The walk sign is then on for 20 sec Find the probability you can cross?

To find the probability of being able to cross, we first calculate the total cycle time of the traffic light, which is 30 seconds (green for cars one way) + 25 seconds (green for cars the other way) + 20 seconds (walk sign) = 75 seconds. The time when you can cross is during the 20 seconds the walk sign is on. Therefore, the probability of being able to cross is the time available to cross divided by the total cycle time: 20/75, which simplifies to 4/15 or approximately 0.267.