The following bar graph shows the number of students who opted for different subjects in 2020 and 2021.

Out of all 5 subjects, what percentage (rounded up to two decimals) of students opted for Biology in 2021?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 21.18%.
The number of students of biology in 2021 = 90
The total number of students of all subjects in 2021 = 85 + 90 + 65 + 110 + 75 = 425
Hence, the required percentage = (90/425) × 100 = 21.18%