At the stadium, there were
37 as many girls as boys. After 78 girls came and 14 boys left the stadium, there was an equal number of girls and boys who remained at the stadium. How many children were at the stadium in the end?
|
Girls |
Boys |
Before |
3 u |
7 u |
Change |
+ 78 |
- 14 |
After |
3 u + 78 |
7 u - 14 |
Number of children in the end is the same.
7 u - 14 = 3 u + 78
7 u - 3 u = 78 + 14
4 u = 92
1 u = 92 ÷ 4 = 23
Number of children in the end
= 2 x (3 u + 78)
= 6 u + 156
= 6 x 23 + 156
= 138 + 156
= 294
Answer(s): 294