At a bird park, there were
38 as many adults as children at first. After 33 adults left, there were 118 more children than adults remaining at a bird park. How many adults were at the bird park at first?
| |
Adults |
Children |
| Before |
3 u |
8 u |
| Change |
- 33 |
|
| After |
3 u - 33 |
8 u |
In the end, the number of children was 118 more than the number of adults. If another 118 adults entered the bird park, the number of children and adults would be the same.
8 u = 3 u - 33 + 118
8 u - 3 u = 118 - 33
5 u = 85
1 u = 85 ÷ 5 = 17
Number of adults at first
= 3 u
= 3 x 17
= 51
Answer: 51
