Directions (1 - 4): The bar graph shows the results of an annual examination in a secondary school in a certain year. Answer the following four questions based on this chart.
1.
The ratio of the total number of boys passed to the total number of girls passed in the three classes VII, VIII and IX is:
$$\eqalign{
& \text{Average no. of girls} \cr
& = \frac{70 + 100 + 50 + 80 + 90}{5} \cr
& = \frac{390}{5} \cr
& = 78 \cr} $$
Class VI boys is nearest to the average no. of girls passed per class.
4.
The class having the highest number of passed students, is:
Class VI = 80 + 70 = 150
Class VII = 100 + 40 = 140
Class VIII = 90 + 50 = 140
Class IX = 80 + 70 = 150
Class X = 90 + 70 = 160 (highest)
Class X is highest number of students passed.
