Barbara went shopping with thrice as much money as Xylia. After Barbara spent $240, Xylia had thrice as much money as Barbara had left. How much more money did Barbara bring along for shopping than Xylia?
| |
Barbara |
Xylia |
Difference |
| Before |
3x3 =
9 u |
1x3 =
3 u |
6 u |
| Change |
- $240 |
|
|
| After |
1 u |
3 u |
|
The amount that Xylia has remains unchanged at first and in the end. Make the amount that Xylia has the same. LCM of 1 and 3 is 3.
Amount that Barbara spent
= 9 u - 1 u
= 8 u
8 u = 240
1 u = 240 ÷ 8 = 30
Amount that Barbara brought along more than Xylia
= 9 u - 3 u
= 6 u
= 6 x 30
= $180
Answer(s): $180
