Xuan, Rachel and Gem went shopping together. They brought a total of $1099 with them. Xuan spent 20% of her money. Rachel spent $109 and Gem spent twice as much money as Xuan. In the end, they had $762 left. How much money did Rachel and Gem have altogether in the end?
| |
Xuan |
Rachel |
Gem |
Total |
| Before |
5 u |
|
|
1099 |
| Change |
- 1 u |
- 109 |
- 2 u |
- 337 |
| After |
4 u |
? |
762 |
20% =
20100 =
15 Xuan spent: Xuan's total = 1 : 5
Amount that Gem spent
= 2 x 1 u
= 2 u
Amount that the three girls spent
= 1 u + 2 u + 109
= 3 u + 109
Amount that the three girls spent
= 1099 - 762
= $337
3 u + 109 = 337
3 u = 337 - 109
3 u = 228
1 u = 228 ÷ 3 = 76
Amount that Rachel and Gem had in the end
= 762 - 4 u
= 762 - 4 x 76
= 762 - 304
= $458
Answer(s): $458
