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:
- x is 5% of the average number of students in schools P and Q.
- y 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.
The difference between the number of boys and girls in school R is half the number of girls who attended the seminar in school Q.
Find the ratio of the total boys who attended the seminar in school Q to the total students in schools R and S combined.