Fanny, Xuan and Wendy went shopping together. They brought a total of $850 with them. Fanny spent 20% of her money. Xuan spent $142 and Wendy spent twice as much money as Fanny. In the end, they had $462 left. How much money did Xuan and Wendy have altogether in the end?
| |
Fanny |
Xuan |
Wendy |
Total |
| Before |
5 u |
|
|
850 |
| Change |
- 1 u |
- 142 |
- 2 u |
- 388 |
| After |
4 u |
? |
462 |
20% =
20100 =
15 Fanny spent: Fanny's total = 1 : 5
Amount that Wendy spent
= 2 x 1 u
= 2 u
Amount that the three girls spent
= 1 u + 2 u + 142
= 3 u + 142
Amount that the three girls spent
= 850 - 462
= $388
3 u + 142 = 388
3 u = 388 - 142
3 u = 246
1 u = 246 ÷ 3 = 82
Amount that Xuan and Wendy had in the end
= 462 - 4 u
= 462 - 4 x 82
= 462 - 328
= $134
Answer(s): $134
