Lamar middle school has 125 laptop computers for teachers to use in the classroom.30 of these computers are designated for math classrooms. what percent are not designated for math classrooms

At a pizza shop 70% of the customers order a pizza 25% of the customers order a salad and 15% of the customers order both a pizza and a salad if s customer is chosen at random what is the probability that he or she orders either a pizza or a salad