Betty had
35 as much money as Esther. Betty received another $31 from her uncle and Esther spent $7 on some markers. In the end, Betty and Esther had an equal amount of money. How much money did the girls have altogether in the end?
|
Betty |
Esther |
Total |
Before |
3 u |
5 u |
|
Change |
+ $31 |
- $7 |
|
After |
3 u + $31 |
5 u - $7 |
8 u + $24 |
Amount of money Betty and Esther has is the same in the end.
5 u - 7 = 3 u + 31
5 u - 3 u = 31 + 7
2 u = 38
1 u = 38 ÷ 2 = 19
Amount the girls have in the end
= 3 u + 31 + 5 u - 7
= 8 u + 24
= 8 x 19 + 24
= 152 + 24
= $176
Answer(s): $176