Kathy, Joelle and Yoko went shopping together. They brought a total of $1428 with them. Kathy spent 50% of her money. Joelle spent $163 and Yoko spent four times as much money as Kathy. In the end, they had $770 left. How much money did Joelle and Yoko have altogether in the end?
| |
Kathy |
Joelle |
Yoko |
Total |
| Before |
2 u |
|
|
1428 |
| Change |
- 1 u |
- 163 |
- 4 u |
- 658 |
| After |
1 u |
? |
770 |
50% =
50100 =
12 Kathy spent: Kathy's total = 1 : 2
Amount that Yoko spent
= 4 x 1 u
= 4 u
Amount that the three girls spent
= 1 u + 4 u + 163
= 5 u + 163
Amount that the three girls spent
= 1428 - 770
= $658
5 u + 163 = 658
5 u = 658 - 163
5 u = 495
1 u = 495 ÷ 5 = 99
Amount that Joelle and Yoko had in the end
= 770 - 1 u
= 770 - 1 x 99
= 770 - 99
= $671
Answer(s): $671
