Ryan had $36 more than Ivory. After Ivory spent
13 of her money, Ryan had thrice as much money as Ivory. How much money did Ryan have at first?
| |
Ryan |
Ivory |
| Before |
6 u |
3 u |
| Change |
|
- 1 u |
| After |
6 u |
2 u |
Amount that Ryan had in the end
= 3 x 2 u
= 6 u
If Ivory had another $36 at first, the amounts that Ryan and Ivory each had at first will be the same.
6 u = 3 u + 36
6 u - 3 u = 36
3 u = 36
1 u = 36 ÷ 3 = 12
Amount Ryan had at first
= 6 u
= 6 x 12
= $72
Answer(s): $72
