Survey in Speaking class

Last week, I did a presentation with my group members Haruna and Kyosuke in Speaking class. We researched about school parking areas and interviewed 100 people who were KGU students.
First of all, we asked them if school have more parking areas for students. 97% of them said yes. We found that most of them need more parking areas at school.
In next question "Would you go to school by car if more parking areas are made?", 72% of them said yes and 28% said no. People who said no don't have own cars, and don't need to go to school by car because they live near school.
Third question is "How much can you pay for parking charges?"
20% of people answered they hope free charges. And 78% can pay ￥100 for charges. 2 can pay ￥500.We found that most of people avoid paying much for them. 

Next question is "How do you go to school?" In the question, 68 people answered bicycle or bike. 12 people said that they go to school by transports like bus and train. and 7 people go to school on foot. 13 people answered car. So we asked them where to park their cars. 9 people park in the prefectural hall next to school, and 3 people rend monthly parking areas. one uses a daily parking area like Times. They say that it is expensive to rent parking areas but they are far from home to school, so they go to school by car.

Next question is "Do you think it is bad for the earth to use a car?"