Risa had
18 as much money as Winnie. Risa received another $41 from her uncle and Winnie spent $8 on some files. In the end, Risa and Winnie had an equal amount of money. How much money did the girls have altogether in the end?
|
Risa |
Winnie |
Total |
Before |
1 u |
8 u |
|
Change |
+ $41 |
- $8 |
|
After |
1 u + $41 |
8 u - $8 |
9 u + $33 |
Amount of money Risa and Winnie has is the same in the end.
8 u - 8 = 1 u + 41
8 u - 1 u = 41 + 8
7 u = 49
1 u = 49 ÷ 7 = 7
Amount the girls have in the end
= 1 u + 41 + 8 u - 8
= 9 u + 33
= 9 x 7 + 33
= 63 + 33
= $96
Answer(s): $96