At a school, there were 10 students from Club D and 40% more students from Club E. Some students from Club E left and the ratio of the number of students from Club D to the number of students from Club E became 5 : 3. How many students from Club E left?
| |
Club D |
Club E |
| Before |
10 |
14 |
| Change |
|
- ? |
| After |
5 u |
3 u |
Number of students from Club E at first in percent
= 100% + 40%
= 140%
Number of students from Club E at first
= 140% x 10
=
140100 x 10
= 14
Number of students in Club D remains unchanged.
5 u = 10
1 u = 10 ÷ 5 = 2
Number of students from Club E in the end
= 3 u
= 3 x 2
= 6
Number of students from Club E who left
= 14 - 6
= 8
Answer(s): 8
