Fiona had
17 as much money as Zara. Fiona received another $31 from her aunt and Zara spent $11 on some pencils. In the end, Fiona and Zara had an equal amount of money. How much money did the girls have altogether in the end?
|
Fiona |
Zara |
Total |
Before |
1 u |
7 u |
|
Change |
+ $31 |
- $11 |
|
After |
1 u + $31 |
7 u - $11 |
8 u + $20 |
Amount of money Fiona and Zara has is the same in the end.
7 u - 11 = 1 u + 31
7 u - 1 u = 31 + 11
6 u = 42
1 u = 42 ÷ 6 = 7
Amount the girls have in the end
= 1 u + 31 + 7 u - 11
= 8 u + 20
= 8 x 7 + 20
= 56 + 20
= $76
Answer(s): $76