Ivory, Jen and Gwen went shopping together. They brought a total of $2413 with them. Ivory spent 30% of her money. Jen spent $273 and Gwen spent four times as much money as Ivory. In the end, they had $790 left. How much money did Jen and Gwen have altogether in the end?
| |
Ivory |
Jen |
Gwen |
Total |
| Before |
10 u |
|
|
2413 |
| Change |
- 3 u |
- 273 |
- 12 u |
- 1623 |
| After |
7 u |
? |
790 |
30% =
30100 =
310 Ivory spent: Ivory's total = 3 : 10
Amount that Gwen spent
= 4 x 3 u
= 12 u
Amount that the three girls spent
= 3 u + 12 u + 273
= 15 u + 273
Amount that the three girls spent
= 2413 - 790
= $1623
15 u + 273 = 1623
15 u = 1623 - 273
15 u = 1350
1 u = 1350 ÷ 15 = 90
Amount that Jen and Gwen had in the end
= 790 - 7 u
= 790 - 7 x 90
= 790 - 630
= $160
Answer(s): $160
