At the arcade, there were 12 as many girls as boys and 37 as many adults as children. If there were 12 more adults than girls at the arcade, find the total number of people at the arcade.
| Adults |
Children |
Total |
| 3x3 |
7x3 |
10x3 |
| |
Girls |
Boys |
|
| |
1x7 |
2x7 |
|
| 9 u |
7 u |
14 u |
30 u |
Number of children is the combined repeated identity. Make the number of children the same. LCM of 3 and 7 is 21.
Number of more adults than girls
= 9 u - 7 u
= 2 u
2 u = 12
1 u = 12 ÷ 2 = 6
Total number of people
= 30 u
= 30 x 6
= 180
Answer(s): 180
