Question : The following bar chart shows the number of students playing various games on a given day. Study the bar chart carefully and answer the question that follows.

The average number of students playing rugby, hockey, badminton, and squash is what percentage of the average number of students playing tennis and football?

Option 1: 60%

Option 2: 30%

Option 3: 50%

Option 4: 45%

Correct Answer: 60%

Solution : The number of students playing rugby = 30
The number of students playing hockey = 60
The number of students playing badminton = 20
The number of students playing squash = 10
The average number of students playing rugby, hockey, badminton, and squash = $\frac{30+60+20+10}{4}=30$
The number of students playing tennis = 20
The number of students playing football = 80
The average number of students playing tennis and football = $\frac{20+80}{2}=50$
Required percentage = $\frac{\text{The average number of students playing rugby, hockey, badminton, and squash }}{\text{The average number of students playing tennis and football}}\times100$
= $\frac{30}{50}\times100=60$%
Hence, the correct answer is 60%.