The percentage of third year girls study biology is 27.78%.
Given that,
- There are 90 girls in the third year,25 of whom study biology.
Based on the above information, the calculation is as follows:
[tex]= 25\div 90[/tex]
= 0.27777
= 27.78%
Therefore we can conclude that The percentage of third year girls study biology is 27.78%.
Learn more: brainly.com/question/6201432
