At the bird park, there were
38 as many girls as boys. After 68 girls came and 32 boys left the bird park, there was an equal number of girls and boys who remained at the bird park. How many children were at the bird park in the end?
|
Girls |
Boys |
Before |
3 u |
8 u |
Change |
+ 68 |
- 32 |
After |
3 u + 68 |
8 u - 32 |
Number of children in the end is the same.
8 u - 32 = 3 u + 68
8 u - 3 u = 68 + 32
5 u = 100
1 u = 100 ÷ 5 = 20
Number of children in the end
= 2 x (3 u + 68)
= 6 u + 136
= 6 x 20 + 136
= 120 + 136
= 256
Answer(s): 256