At a stadium, there were
38 as many adults as children at first. After 49 adults left, there were 154 more children than adults remaining at a stadium. How many adults were at the stadium at first?
| |
Adults |
Children |
| Before |
3 u |
8 u |
| Change |
- 49 |
|
| After |
3 u - 49 |
8 u |
In the end, the number of children was 154 more than the number of adults. If another 154 adults entered the stadium, the number of children and adults would be the same.
8 u = 3 u - 49 + 154
8 u - 3 u = 154 - 49
5 u = 105
1 u = 105 ÷ 5 = 21
Number of adults at first
= 3 u
= 3 x 21
= 63
Answer: 63
