At a school, there were 48 children from Club D and 25% less children from Club E. Some children joined Club E and the ratio of the number of children from Club D to the number of children from Club E became 6 : 5. How many children joined Club E?
| |
Club D |
Club E |
| Before |
48 |
36 |
| Change |
|
+ ? |
| After |
6 u |
5 u |
Number of children from Club E at first in percent
= 100% - 25%
= 75%
Number of children from Club E at first
= 75% x 48
=
75100 x 48
= 36
Number of children in Club D remains unchanged.
6 u = 48
1 u = 48 ÷ 6 = 8
Number of children from Club E in the end
= 5 u
= 5 x 8
= 40
Number of children joined Club E
= 40 - 36
= 4
Answer(s): 4
