At a school, there were 60 girls from Club F and 25% less girls from Club G. Some girls joined Club G and the ratio of the number of girls from Club F to the number of girls from Club G became 6 : 5. How many girls joined Club G?
| |
Club F |
Club G |
| Before |
60 |
45 |
| Change |
|
+ ? |
| After |
6 u |
5 u |
Number of girls from Club G at first in percent
= 100% - 25%
= 75%
Number of girls from Club G at first
= 75% x 60
=
75100 x 60
= 45
Number of girls in Club F remains unchanged.
6 u = 60
1 u = 60 ÷ 6 = 10
Number of girls from Club G in the end
= 5 u
= 5 x 10
= 50
Number of girls joined Club G
= 50 - 45
= 5
Answer(s): 5
