Answer:
40%
Step-by-step explanation:
135 of 225 is equal to 60%. Therefore, the remaining percent, which should equal to 100, did not wear spirit shirts. 100 - 60 = 40. Therefore, 40% of students did not wear spirit shirts on Friday.
I hope this will help you :)
The answer is going to be B. 15
sorry you forgot to add the graph link in with your question