Sarah, Eva and Lucy went shopping together. They brought a total of $1384 with them. Sarah spent 50% of her money. Eva spent $128 and Lucy spent thrice as much money as Sarah. In the end, they had $780 left. How much money did Eva and Lucy have altogether in the end?
| |
Sarah |
Eva |
Lucy |
Total |
| Before |
2 u |
|
|
1384 |
| Change |
- 1 u |
- 128 |
- 3 u |
- 604 |
| After |
1 u |
? |
780 |
50% =
50100 =
12 Sarah spent: Sarah's total = 1 : 2
Amount that Lucy spent
= 3 x 1 u
= 3 u
Amount that the three girls spent
= 1 u + 3 u + 128
= 4 u + 128
Amount that the three girls spent
= 1384 - 780
= $604
4 u + 128 = 604
4 u = 604 - 128
4 u = 476
1 u = 476 ÷ 4 = 119
Amount that Eva and Lucy had in the end
= 780 - 1 u
= 780 - 1 x 119
= 780 - 119
= $661
Answer(s): $661
