Kathy had
38 as much money as Fiona. Kathy received another $50 from her aunt and Fiona spent $10 on some pens. In the end, Kathy and Fiona had an equal amount of money. How much money did the girls have altogether in the end?
| |
Kathy |
Fiona |
Total |
| Before |
3 u |
8 u |
|
| Change |
+ $50 |
- $10 |
|
| After |
3 u + $50 |
8 u - $10 |
11 u + $40 |
Amount of money Kathy and Fiona has is the same in the end.
8 u - 10 = 3 u + 50
8 u - 3 u = 50 + 10
5 u = 60
1 u = 60 ÷ 5 = 12
Amount the girls have in the end
= 3 u + 50 + 8 u - 10
= 11 u + 40
= 11 x 12 + 40
= 132 + 40
= $172
Answer(s): $172
