At a stadium, there were
35 as many adults as children at first. After 42 adults left, there were 166 more children than adults remaining at a stadium. How many adults were at the stadium at first?
|
Adults |
Children |
Before |
3 u |
5 u |
Change |
- 42 |
|
After |
3 u - 42 |
5 u |
In the end, the number of children was 166 more than the number of adults. If another 166 adults entered the stadium, the number of children and adults would be the same.
5 u = 3 u - 42 + 166
5 u - 3 u = 166 - 42
2 u = 124
1 u = 124 ÷ 2 = 62
Number of adults at first
= 3 u
= 3 x 62
= 186
Answer: 186