Opal had $20 more than Tiffany at first. After Opal and Tiffany spent an equal amount of money, Tiffany had
35 as much as Opal. How much money did Opal have left?
| |
Opal |
Tiffany |
Difference |
| Before |
1 u + $20 |
1 u |
$20 |
| Change |
- 1 |
- 1 |
|
| After |
5 p |
3 p |
2 p |
Difference in the amounts between Opal and Tiffany
= 5 p - 3 p
= 2 p
Since both Opal and Tiffany spent an equal amount, the difference in the amounts that Opal and Tiffany had at first and in the end remains unchanged.
2 p = 20
1 p = 20 ÷ 2 = 10
Amount that Opal had left
= 5 p
= 5 x 10
= $50
Answer(s): $50
