At a theme park, there were
38 as many adults as children at first. After 21 adults left, there were 136 more children than adults remaining at a theme park. How many children were at the theme park?
| |
Adults |
Children |
| Before |
3 u |
8 u |
| Change |
- 21 |
|
| After |
3 u - 21 |
8 u |
In the end, the number of children was 136 more than the number of adults. If another 136 adults entered the theme park, the number of children and adults would be the same.
8 u = 3 u - 21 + 136
8 u - 3 u = 136 - 21
5 u = 115
1 u = 115 ÷ 5 = 23
Number of children at first
= 8 u
= 8 x 23
= 184
Answer: 184
