Vanessa and Fiona had equal amount of money. Each day, Vanessa spent $5 and Fiona spent $7. When Vanessa had $80 left, Fiona had
14 as much money left as Vanessa. How much money did the two girls have at first?
| |
Vanessa |
Fiona |
| Before |
5 u + 80 |
7 u + 20 |
| Change |
- 5 u |
- 7 u |
| After |
$80 |
$20 |
Amount that Fiona had left
=
14 x 80
= $20
The amount that Vanessa and Fiona had at first is the same.
7 u + 20 = 5 u + 80
7 u - 5 u = 80 - 20
2 u = 60
1 u = 60 ÷ 2 = 30
Amount that Vanessa had at first
= 5 u + 80
= 5 x 30 + 80
= 150 + 80
= $230
Total amount that both girls had at first
= 2 x 230
= $460
Answer(s): $460
