At a school, there were 35 girls from Club U and 40% more girls from Club V. Some girls from Club V left and the ratio of the number of girls from Club U to the number of girls from Club V became 5 : 3. How many girls from Club V left?
| |
Club U |
Club V |
| Before |
35 |
49 |
| Change |
|
- ? |
| After |
5 u |
3 u |
Number of girls from Club V at first in percent
= 100% + 40%
= 140%
Number of girls from Club V at first
= 140% x 35
=
140100 x 35
= 49
Number of girls in Club U remains unchanged.
5 u = 35
1 u = 35 ÷ 5 = 7
Number of girls from Club V in the end
= 3 u
= 3 x 7
= 21
Number of girls from Club V who left
= 49 - 21
= 28
Answer(s): 28
