Kimberly and Jaslyn had equal amount of money. Each day, Kimberly spent $11 and Jaslyn spent $13. When Kimberly had $80 left, Jaslyn had
12 as much money left as Kimberly. How much money did the two girls have at first?
| |
Kimberly |
Jaslyn |
| Before |
11 u + 80 |
13 u + 40 |
| Change |
- 11 u |
- 13 u |
| After |
$80 |
$40 |
Amount that Jaslyn had left
=
12 x 80
= $40
The amount that Kimberly and Jaslyn had at first is the same.
13 u + 40 = 11 u + 80
13 u - 11 u = 80 - 40
2 u = 40
1 u = 40 ÷ 2 = 20
Amount that Kimberly had at first
= 11 u + 80
= 11 x 20 + 80
= 220 + 80
= $300
Total amount that both girls had at first
= 2 x 300
= $600
Answer(s): $600
