Tiffany and Tina went shopping together. Tiffany brought thrice as much money as Tina. After Tiffany had spent $750 and Tina had spent $180, they had an equal amount of money left. How much money did each of them have at first?
- Tina
- Tiffany
|
Tiffany |
Tina |
Before |
3 u |
1 u |
Change |
- $750 |
- $180 |
After |
3 u - $750 |
1 u - $180 |
(a)
The amounts that Tiffany and Tina had in the end are the same.
3 u - 750 = 1 u - 180
3 u - 1 u = 750 - 180
2 u = 570
1 u = 570 ÷ 2 = 285
Amount that Tina had at first
= 1 u
= $285
(b)
Amount that Tiffany had at first
= 3 u
= 3 x 285
= $855
Answer(s): (a) $285, (b) $855