Mary, Lynn and Joelle went shopping together. They brought a total of $1592 with them. Mary spent 20% of her money. Lynn spent $281 and Joelle spent thrice as much money as Mary. In the end, they had $727 left. How much money did Lynn and Joelle have altogether in the end?
| |
Mary |
Lynn |
Joelle |
Total |
| Before |
5 u |
|
|
1592 |
| Change |
- 1 u |
- 281 |
- 3 u |
- 865 |
| After |
4 u |
? |
727 |
20% =
20100 =
15 Mary spent: Mary's total = 1 : 5
Amount that Joelle spent
= 3 x 1 u
= 3 u
Amount that the three girls spent
= 1 u + 3 u + 281
= 4 u + 281
Amount that the three girls spent
= 1592 - 727
= $865
4 u + 281 = 865
4 u = 865 - 281
4 u = 584
1 u = 584 ÷ 4 = 146
Amount that Lynn and Joelle had in the end
= 727 - 4 u
= 727 - 4 x 146
= 727 - 584
= $143
Answer(s): $143
