Kimberly and Gillian went shopping with a total of $240. After Kimberly spent
34 of her money and Gillian spent $100, the ratio of Gillian's money became 3 times as much as Kimberly's money. Find the ratio of Kimberly's money to Gillian's money at first.
| |
Kimberly |
Gillian |
| Before |
4 u |
3 u + 100 |
| Change |
- 3 u |
- 100 |
| After |
1 u |
|
| Comparing between Kimberly and Gillian in the end |
1 u |
3 u |
Total amount that Kimberly and Gillian had at first
= 4 u + 3 u + 100
= 7 u + 100
7 u + 100 = 240
4 u + 3 u = 240 - 100
7 u = 140
1 u = 140 ÷ 7 = 20
Amount that Kimberly had at first
= 4 u
= 4 x 20
= $80
Amount that Gillian had at first
= 240 - 80
= $160
At first
Kimberly : Gillian
80 : 160
1 : 2
Answer(s): 1 : 2
