Dylan School had 580 students and Oscar School had 25% more students. When an equal number of students left each school, the ratio of the students in Oscar School to that in Dylan School became 3 : 2. How many students were there in both schools in the end?
|
Dylan School |
Oscar School |
Difference |
Before |
580 |
|
145 |
Change |
- ? |
- ? |
|
After |
3 u |
2 u |
1 u |
Since an equal number of students left each school, the difference in the number of students at first and in the end between the 2 schools remains the same. Make the difference between the number of students in Dylan School and Oscar School at first and in the end the same.
Difference between the number of students in both schools at first
= 25% x 580
=
25100 x 580
= 145
Difference between the number of students in both schools in the end
= 3 u - 2 u
= 1 u
1 u = 145
Total number of students in both schools in the end
= 3 u + 2 u
= 5 u
= 5 x 145
= 725
Answer(s): 725