A total of 228 adults and children went to a bird park. There were 20 more children than adults at the bird park. Given that the number of girls was 3 times the number of boys at the bird park, how many girls were at the bird park?
| Adults |
Children |
Total |
| 4 u - 20 |
4 u |
228 |
| |
Girls |
Boys |
|
| |
3 u |
1 u |
|
Number of boys = 1 u
Number of girls = 3 u
Number of children = 1 u + 3 u = 4 u
Number of adults = 4 u - 20
Total number of people
= 4 u + 4 u - 20
= 8 u - 20
8 u - 20 = 228
8 u = 228 + 20
8 u = 248
1 u = 248 ÷ 8 = 31
Number of girls
= 3 u
= 3 x 31
= 93
Answer(s): 93
