Every day a school bus driver passes the same traffic light twice, once before school and once after.
Each time he passes the light, he records if it is red, green, or yellow.
Here is a summary of the data he got after 150 days. Suppose the driver will continue recording the colors for 50 more days.

In how many of these 50 days will the light be yellow at least once? Use the data to make a prediction.