At a theme park, there were
35 as many adults as children at first. After 20 adults left, there were 154 more children than adults remaining at a theme park. How many children were at the theme park?
| |
Adults |
Children |
| Before |
3 u |
5 u |
| Change |
- 20 |
|
| After |
3 u - 20 |
5 u |
In the end, the number of children was 154 more than the number of adults. If another 154 adults entered the theme park, the number of children and adults would be the same.
5 u = 3 u - 20 + 154
5 u - 3 u = 154 - 20
2 u = 134
1 u = 134 ÷ 2 = 67
Number of children at first
= 5 u
= 5 x 67
= 335
Answer: 335
