Shiyun and Yoko had equal amount of money. Each day, Shiyun spent $14 and Yoko spent $20. When Shiyun had $120 left, Yoko had
12 as much money left as Shiyun. How much money did the two girls have at first?
| |
Shiyun |
Yoko |
| Before |
14 u + 120 |
20 u + 60 |
| Change |
- 14 u |
- 20 u |
| After |
$120 |
$60 |
Amount that Yoko had left
=
12 x 120
= $60
The amount that Shiyun and Yoko had at first is the same.
20 u + 60 = 14 u + 120
20 u - 14 u = 120 - 60
6 u = 60
1 u = 60 ÷ 6 = 10
Amount that Shiyun had at first
= 14 u + 120
= 14 x 10 + 120
= 140 + 120
= $260
Total amount that both girls had at first
= 2 x 260
= $520
Answer(s): $520
