At a museum, there were
47 as many adults as children at first. After 28 adults left, there were 175 more children than adults remaining at a museum. How many children were at the museum?
|
Adults |
Children |
Before |
4 u |
7 u |
Change |
- 28 |
|
After |
4 u - 28 |
7 u |
In the end, the number of children was 175 more than the number of adults. If another 175 adults entered the museum, the number of children and adults would be the same.
7 u = 4 u - 28 + 175
7 u - 4 u = 175 - 28
3 u = 147
1 u = 147 ÷ 3 = 49
Number of children at first
= 7 u
= 7 x 49
= 343
Answer: 343