Comprehension Passage
Directions: The following line graph represents the ratio of passed students to failed students for five different classes in the year 2016-17 for standard 9th. Study the graph and answer the question.
If total students in class D was 80, and in class A was 70, then what percent of students passed including both the class?
1
50%
2
40%
3
48%
4
52%
5
55%