Elyse went shopping with twice as much money as Tina. After Elyse spent $450, Tina had thrice as much money as Elyse had left. How much more money did Elyse bring along for shopping than Tina?
| |
Elyse |
Tina |
Difference |
| Before |
2x3 =
6 u |
1x3 =
3 u |
3 u |
| Change |
- $450 |
|
|
| After |
1 u |
3 u |
|
The amount that Tina has remains unchanged at first and in the end. Make the amount that Tina has the same. LCM of 1 and 3 is 3.
Amount that Elyse spent
= 6 u - 1 u
= 5 u
5 u = 450
1 u = 450 ÷ 5 = 90
Amount that Elyse brought along more than Tina
= 6 u - 3 u
= 3 u
= 3 x 90
= $270
Answer(s): $270
