Julie, Opal and Emma went shopping together. They brought a total of $947 with them. Julie spent 20% of her money. Opal spent $106 and Emma spent thrice as much money as Julie. In the end, they had $637 left. How much money did Opal and Emma have altogether in the end?
| |
Julie |
Opal |
Emma |
Total |
| Before |
5 u |
|
|
947 |
| Change |
- 1 u |
- 106 |
- 3 u |
- 310 |
| After |
4 u |
? |
637 |
20% =
20100 =
15 Julie spent: Julie's total = 1 : 5
Amount that Emma spent
= 3 x 1 u
= 3 u
Amount that the three girls spent
= 1 u + 3 u + 106
= 4 u + 106
Amount that the three girls spent
= 947 - 637
= $310
4 u + 106 = 310
4 u = 310 - 106
4 u = 204
1 u = 204 ÷ 4 = 51
Amount that Opal and Emma had in the end
= 637 - 4 u
= 637 - 4 x 51
= 637 - 204
= $433
Answer(s): $433
