Answer
P(good apple)=$\frac{14}{15}$
Work Step by Step
P(event)=$\frac{numberoftimeevent occurs}{numberof times the experiment is done}$
The experiment is done 225 times. The number of times there are good apples is 225-15=210. So the event occurs 210 times.
P(good apple)=$\frac{210}{225}$
P(good apple)=$\frac{14}{15}$