Zara and Erika had equal amount of money. Each day, Zara spent $7 and Erika spent $9. When Zara had $96 left, Erika had
12 as much money left as Zara. How much money did the two girls have at first?
| |
Zara |
Erika |
| Before |
7 u + 96 |
9 u + 48 |
| Change |
- 7 u |
- 9 u |
| After |
$96 |
$48 |
Amount that Erika had left
=
12 x 96
= $48
The amount that Zara and Erika had at first is the same.
9 u + 48 = 7 u + 96
9 u - 7 u = 96 - 48
2 u = 48
1 u = 48 ÷ 2 = 24
Amount that Zara had at first
= 7 u + 96
= 7 x 24 + 96
= 168 + 96
= $264
Total amount that both girls had at first
= 2 x 264
= $528
Answer(s): $528
