At a school, there were 40 students from Club T and 40% less students from Club U. Some students joined Club U and the ratio of the number of students from Club T to the number of students from Club U became 5 : 4. How many students joined Club U?
| |
Club T |
Club U |
| Before |
40 |
24 |
| Change |
|
+ ? |
| After |
5 u |
4 u |
Number of students from Club U at first in percent
= 100% - 40%
= 60%
Number of students from Club U at first
= 60% x 40
=
60100 x 40
= 24
Number of students in Club T remains unchanged.
5 u = 40
1 u = 40 ÷ 5 = 8
Number of students from Club U in the end
= 4 u
= 4 x 8
= 32
Number of students joined Club U
= 32 - 24
= 8
Answer(s): 8
