At a zoo, there were
35 as many adults as children at first. After 29 adults left, there were 151 more children than adults remaining at a zoo. How many adults were at the zoo at first?
| |
Adults |
Children |
| Before |
3 u |
5 u |
| Change |
- 29 |
|
| After |
3 u - 29 |
5 u |
In the end, the number of children was 151 more than the number of adults. If another 151 adults entered the zoo, the number of children and adults would be the same.
5 u = 3 u - 29 + 151
5 u - 3 u = 151 - 29
2 u = 122
1 u = 122 ÷ 2 = 61
Number of adults at first
= 3 u
= 3 x 61
= 183
Answer: 183
