Eric had $50 more than Vanessa. After Vanessa spent
13 of her money, Eric had four times as much money as Vanessa. How much money did Eric have at first?
| |
Eric |
Vanessa |
| Before |
8 u |
3 u |
| Change |
|
- 1 u |
| After |
8 u |
2 u |
Amount that Eric had in the end
= 4 x 2 u
= 8 u
If Vanessa had another $50 at first, the amounts that Eric and Vanessa each had at first will be the same.
8 u = 3 u + 50
8 u - 3 u = 50
5 u = 50
1 u = 50 ÷ 5 = 10
Amount Eric had at first
= 8 u
= 8 x 10
= $80
Answer(s): $80
