Yoko and Opal had equal amount of money. Each day, Yoko spent $16 and Opal spent $23. When Yoko had $84 left, Opal had
12 as much money left as Yoko. How much money did the two girls have at first?
| |
Yoko |
Opal |
| Before |
16 u + 84 |
23 u + 42 |
| Change |
- 16 u |
- 23 u |
| After |
$84 |
$42 |
Amount that Opal had left
=
12 x 84
= $42
The amount that Yoko and Opal had at first is the same.
23 u + 42 = 16 u + 84
23 u - 16 u = 84 - 42
7 u = 42
1 u = 42 ÷ 7 = 6
Amount that Yoko had at first
= 16 u + 84
= 16 x 6 + 84
= 96 + 84
= $180
Total amount that both girls had at first
= 2 x 180
= $360
Answer(s): $360
