Dana, Xandra and Cindy went shopping together. They brought a total of $1330 with them. Dana spent 20% of her money. Xandra spent $178 and Cindy spent four times as much money as Dana. In the end, they had $717 left. How much money did Xandra and Cindy have altogether in the end?
| |
Dana |
Xandra |
Cindy |
Total |
| Before |
5 u |
|
|
1330 |
| Change |
- 1 u |
- 178 |
- 4 u |
- 613 |
| After |
4 u |
? |
717 |
20% =
20100 =
15 Dana spent: Dana's total = 1 : 5
Amount that Cindy spent
= 4 x 1 u
= 4 u
Amount that the three girls spent
= 1 u + 4 u + 178
= 5 u + 178
Amount that the three girls spent
= 1330 - 717
= $613
5 u + 178 = 613
5 u = 613 - 178
5 u = 435
1 u = 435 ÷ 5 = 87
Amount that Xandra and Cindy had in the end
= 717 - 4 u
= 717 - 4 x 87
= 717 - 348
= $369
Answer(s): $369
