Shiyun had
37 as much money as Joelle. Shiyun received another $27 from her aunt and Joelle spent $9 on some markers. In the end, Shiyun and Joelle had an equal amount of money. How much money did the girls have altogether in the end?
|
Shiyun |
Joelle |
Total |
Before |
3 u |
7 u |
|
Change |
+ $27 |
- $9 |
|
After |
3 u + $27 |
7 u - $9 |
10 u + $18 |
Amount of money Shiyun and Joelle has is the same in the end.
7 u - 9 = 3 u + 27
7 u - 3 u = 27 + 9
4 u = 36
1 u = 36 ÷ 4 = 9
Amount the girls have in the end
= 3 u + 27 + 7 u - 9
= 10 u + 18
= 10 x 9 + 18
= 90 + 18
= $108
Answer(s): $108