Gem, Shiyun and Risa went shopping together. They brought a total of $1367 with them. Gem spent 50% of her money. Shiyun spent $209 and Risa spent thrice as much money as Gem. In the end, they had $430 left. How much money did Shiyun and Risa have altogether in the end?
| |
Gem |
Shiyun |
Risa |
Total |
| Before |
2 u |
|
|
1367 |
| Change |
- 1 u |
- 209 |
- 3 u |
- 937 |
| After |
1 u |
? |
430 |
50% =
50100 =
12 Gem spent: Gem's total = 1 : 2
Amount that Risa spent
= 3 x 1 u
= 3 u
Amount that the three girls spent
= 1 u + 3 u + 209
= 4 u + 209
Amount that the three girls spent
= 1367 - 430
= $937
4 u + 209 = 937
4 u = 937 - 209
4 u = 728
1 u = 728 ÷ 4 = 182
Amount that Shiyun and Risa had in the end
= 430 - 1 u
= 430 - 1 x 182
= 430 - 182
= $248
Answer(s): $248
