Erika and Jaslyn went on a tour together. Erika brought thrice as much money as Jaslyn. After Erika had spent $900 and Jaslyn had spent $180, they had an equal amount of money left. How much money did each of them have at first?
- Jaslyn
- Erika
|
Erika |
Jaslyn |
Before |
3 u |
1 u |
Change |
- $900 |
- $180 |
After |
3 u - $900 |
1 u - $180 |
(a)
The amounts that Erika and Jaslyn had in the end are the same.
3 u - 900 = 1 u - 180
3 u - 1 u = 900 - 180
2 u = 720
1 u = 720 ÷ 2 = 360
Amount that Jaslyn had at first
= 1 u
= $360
(b)
Amount that Erika had at first
= 3 u
= 3 x 360
= $1080
Answer(s): (a) $360, (b) $1080