Opal, Emma and Winnie went shopping together. They brought a total of $1258 with them. Opal spent 20% of her money. Emma spent $170 and Winnie spent thrice as much money as Opal. In the end, they had $628 left. How much money did Emma and Winnie have altogether in the end?
| |
Opal |
Emma |
Winnie |
Total |
| Before |
5 u |
|
|
1258 |
| Change |
- 1 u |
- 170 |
- 3 u |
- 630 |
| After |
4 u |
? |
628 |
20% =
20100 =
15 Opal spent: Opal's total = 1 : 5
Amount that Winnie spent
= 3 x 1 u
= 3 u
Amount that the three girls spent
= 1 u + 3 u + 170
= 4 u + 170
Amount that the three girls spent
= 1258 - 628
= $630
4 u + 170 = 630
4 u = 630 - 170
4 u = 460
1 u = 460 ÷ 4 = 115
Amount that Emma and Winnie had in the end
= 628 - 4 u
= 628 - 4 x 115
= 628 - 460
= $168
Answer(s): $168
