At a school, there were 25 students from Club F and 40% more students from Club G. Some students from Club G left and the ratio of the number of students from Club F to the number of students from Club G became 5 : 3. How many students from Club G left?
| |
Club F |
Club G |
| Before |
25 |
35 |
| Change |
|
- ? |
| After |
5 u |
3 u |
Number of students from Club G at first in percent
= 100% + 40%
= 140%
Number of students from Club G at first
= 140% x 25
=
140100 x 25
= 35
Number of students in Club F remains unchanged.
5 u = 25
1 u = 25 ÷ 5 = 5
Number of students from Club G in the end
= 3 u
= 3 x 5
= 15
Number of students from Club G who left
= 35 - 15
= 20
Answer(s): 20
