Olivia had
110 as much money as Gwen. Olivia received another $29 from her mother and Gwen spent $7 on some markers. In the end, Olivia and Gwen had an equal amount of money. How much money did the girls have altogether in the end?
|
Olivia |
Gwen |
Total |
Before |
1 u |
10 u |
|
Change |
+ $29 |
- $7 |
|
After |
1 u + $29 |
10 u - $7 |
11 u + $22 |
Amount of money Olivia and Gwen has is the same in the end.
10 u - 7 = 1 u + 29
10 u - 1 u = 29 + 7
9 u = 36
1 u = 36 ÷ 9 = 4
Amount the girls have in the end
= 1 u + 29 + 10 u - 7
= 11 u + 22
= 11 x 4 + 22
= 44 + 22
= $66
Answer(s): $66