At a school, there were 60 children from Club V and 25% more children from Club W. Some children from Club W left and the ratio of the number of children from Club V to the number of children from Club W became 5 : 4. How many children from Club W left?
| |
Club V |
Club W |
| Before |
60 |
75 |
| Change |
|
- ? |
| After |
5 u |
4 u |
Number of children from Club W at first in percent
= 100% + 25%
= 125%
Number of children from Club W at first
= 125% x 60
=
125100 x 60
= 75
Number of children in Club V remains unchanged.
5 u = 60
1 u = 60 ÷ 5 = 12
Number of children from Club W in the end
= 4 u
= 4 x 12
= 48
Number of children from Club W who left
= 75 - 48
= 27
Answer(s): 27
