At a zoo, there were
38 as many adults as children at first. After 39 adults left, there were 179 more children than adults remaining at a zoo. How many children were at the zoo?
| |
Adults |
Children |
| Before |
3 u |
8 u |
| Change |
- 39 |
|
| After |
3 u - 39 |
8 u |
In the end, the number of children was 179 more than the number of adults. If another 179 adults entered the zoo, the number of children and adults would be the same.
8 u = 3 u - 39 + 179
8 u - 3 u = 179 - 39
5 u = 140
1 u = 140 ÷ 5 = 28
Number of children at first
= 8 u
= 8 x 28
= 224
Answer: 224
