Shiyun and Cindy went shopping with a total of $558. After Shiyun spent
56 of her money and Cindy spent $72, the ratio of Cindy's money became 3 times as much as Shiyun's money. Find the ratio of Shiyun's money to Cindy's money at first.
|
Shiyun |
Cindy |
Before |
6 u |
3 u + 72 |
Change |
- 5 u |
- 72 |
After |
1 u |
|
Comparing between Shiyun and Cindy in the end |
1 u |
3 u |
Total amount that Shiyun and Cindy had at first
= 6 u + 3 u + 72
= 9 u + 72
9 u + 72 = 558
6 u + 5 u = 558 - 72
9 u = 486
1 u = 486 ÷ 9 = 54
Amount that Shiyun had at first
= 6 u
= 6 x 54
= $324
Amount that Cindy had at first
= 558 - 324
= $234
At first
Shiyun : Cindy
324 : 234
18 : 13
Answer(s): 18 : 13