Billy had $55 more than Jaslyn. After Jaslyn spent
13 of her money, Billy had four times as much money as Jaslyn. How much money did Billy have at first?
| |
Billy |
Jaslyn |
| Before |
8 u |
3 u |
| Change |
|
- 1 u |
| After |
8 u |
2 u |
Amount that Billy had in the end
= 4 x 2 u
= 8 u
If Jaslyn had another $55 at first, the amounts that Billy and Jaslyn each had at first will be the same.
8 u = 3 u + 55
8 u - 3 u = 55
5 u = 55
1 u = 55 ÷ 5 = 11
Amount Billy had at first
= 8 u
= 8 x 11
= $88
Answer(s): $88
