Wendy, Erika and Dana went shopping together. They brought a total of $1705 with them. Wendy spent 50% of her money. Erika spent $165 and Dana spent four times as much money as Wendy. In the end, they had $605 left. How much money did Erika and Dana have altogether in the end?
| |
Wendy |
Erika |
Dana |
Total |
| Before |
2 u |
|
|
1705 |
| Change |
- 1 u |
- 165 |
- 4 u |
- 1100 |
| After |
1 u |
? |
605 |
50% =
50100 =
12 Wendy spent: Wendy's total = 1 : 2
Amount that Dana spent
= 4 x 1 u
= 4 u
Amount that the three girls spent
= 1 u + 4 u + 165
= 5 u + 165
Amount that the three girls spent
= 1705 - 605
= $1100
5 u + 165 = 1100
5 u = 1100 - 165
5 u = 935
1 u = 935 ÷ 5 = 187
Amount that Erika and Dana had in the end
= 605 - 1 u
= 605 - 1 x 187
= 605 - 187
= $418
Answer(s): $418
