Billy had $40 more than Xylia. After Xylia spent
23 of her money, Billy had five times as much money as Xylia. How much money did Billy have at first?
| |
Billy |
Xylia |
| Before |
5 u |
3 u |
| Change |
|
- 2 u |
| After |
5 u |
1 u |
Amount that Billy had in the end
= 5 x 1 u
= 5 u
If Xylia had another $40 at first, the amounts that Billy and Xylia each had at first will be the same.
5 u = 3 u + 40
5 u - 3 u = 40
2 u = 40
1 u = 40 ÷ 2 = 20
Amount Billy had at first
= 5 u
= 5 x 20
= $100
Answer(s): $100
