At a school, there were 28 students from Club S and 25% more students from Club T. Some students from Club T left and the ratio of the number of students from Club S to the number of students from Club T became 4 : 3. How many students from Club T left?
| |
Club S |
Club T |
| Before |
28 |
35 |
| Change |
|
- ? |
| After |
4 u |
3 u |
Number of students from Club T at first in percent
= 100% + 25%
= 125%
Number of students from Club T at first
= 125% x 28
=
125100 x 28
= 35
Number of students in Club S remains unchanged.
4 u = 28
1 u = 28 ÷ 4 = 7
Number of students from Club T in the end
= 3 u
= 3 x 7
= 21
Number of students from Club T who left
= 35 - 21
= 14
Answer(s): 14
