The table below shows the number of girls, the percentage of boys out of the total students, and the percentage of students who attended a seminar in ...
Question
The table below shows the number of girls, the percentage of boys out of the total students, and the percentage of students who attended a seminar in four different schools.
| Schools | Number of girls | Percentage of boys out of total students | Percentage of students attended seminar |
|---|---|---|---|
| P | 120 | 40\% | x\% |
| Q | 80 | 80\% | 40\% |
| R | 35 | 65\% | y\% |
| S | 50 | 75\% | 60\% |
Note:
- is 5% of the average number of students in schools P and Q.
- is 12.5% of the total students who attended the seminar in school Q.
- Total students = total girls + total boys.
- Total students = students attended seminar + students not attended seminar.
What is the average number of boys in schools P and S as a percentage of the difference between the number of students who attended the seminar in schools P and R?