Tiffany, Marion and Irene went shopping together. They brought a total of $1626 with them. Tiffany spent 50% of her money. Marion spent $163 and Irene spent thrice as much money as Tiffany. In the end, they had $715 left. How much money did Marion and Irene have altogether in the end?
| |
Tiffany |
Marion |
Irene |
Total |
| Before |
2 u |
|
|
1626 |
| Change |
- 1 u |
- 163 |
- 3 u |
- 911 |
| After |
1 u |
? |
715 |
50% =
50100 =
12 Tiffany spent: Tiffany's total = 1 : 2
Amount that Irene spent
= 3 x 1 u
= 3 u
Amount that the three girls spent
= 1 u + 3 u + 163
= 4 u + 163
Amount that the three girls spent
= 1626 - 715
= $911
4 u + 163 = 911
4 u = 911 - 163
4 u = 748
1 u = 748 ÷ 4 = 187
Amount that Marion and Irene had in the end
= 715 - 1 u
= 715 - 1 x 187
= 715 - 187
= $528
Answer(s): $528
