At a museum, there were
47 as many adults as children at first. After 48 adults left, there were 159 more children than adults remaining at a museum. How many adults were at the museum at first?
|
Adults |
Children |
Before |
4 u |
7 u |
Change |
- 48 |
|
After |
4 u - 48 |
7 u |
In the end, the number of children was 159 more than the number of adults. If another 159 adults entered the museum, the number of children and adults would be the same.
7 u = 4 u - 48 + 159
7 u - 4 u = 159 - 48
3 u = 111
1 u = 111 ÷ 3 = 37
Number of adults at first
= 4 u
= 4 x 37
= 148
Answer: 148