Julie had
35 as much money as Mary. Julie received another $50 from her uncle and Mary spent $10 on some notebooks. In the end, Julie and Mary had an equal amount of money. How much money did the girls have altogether in the end?
| |
Julie |
Mary |
Total |
| Before |
3 u |
5 u |
|
| Change |
+ $50 |
- $10 |
|
| After |
3 u + $50 |
5 u - $10 |
8 u + $40 |
Amount of money Julie and Mary has is the same in the end.
5 u - 10 = 3 u + 50
5 u - 3 u = 50 + 10
2 u = 60
1 u = 60 ÷ 2 = 30
Amount the girls have in the end
= 3 u + 50 + 5 u - 10
= 8 u + 40
= 8 x 30 + 40
= 240 + 40
= $280
Answer(s): $280
