The bar graph shows the usual method of transport to school for the students in a class. Then what is the total number of students in the class?
20
5 students uses bus
3 students uses bike
1 student uses taxi
2 students uses train
6 students uses car
5 students walk to school
Total number of students = 5 + 1 + 3 + 2 + 6 + 5 = 22