Emily and Min went shopping with a total of $672. After Emily spent
56 of her money and Min spent $72, the ratio of Min's money became 4 times as much as Emily's money. Find the ratio of Emily's money to Min's money at first.
| |
Emily |
Min |
| Before |
6 u |
4 u + 72 |
| Change |
- 5 u |
- 72 |
| After |
1 u |
|
| Comparing between Emily and Min in the end |
1 u |
4 u |
Total amount that Emily and Min had at first
= 6 u + 4 u + 72
= 10 u + 72
10 u + 72 = 672
6 u + 5 u = 672 - 72
10 u = 600
1 u = 600 ÷ 10 = 60
Amount that Emily had at first
= 6 u
= 6 x 60
= $360
Amount that Min had at first
= 672 - 360
= $312
At first
Emily : Min
360 : 312
15 : 13
Answer(s): 15 : 13
