Opal had $35 more than Gem at first. After Opal and Gem spent an equal amount of money, Gem had
310 as much as Opal. How much money did Opal have left?
| |
Opal |
Gem |
Difference |
| Before |
1 u + $35 |
1 u |
$35 |
| Change |
- 1 |
- 1 |
|
| After |
10 p |
3 p |
7 p |
Difference in the amounts between Opal and Gem
= 10 p - 3 p
= 7 p
Since both Opal and Gem spent an equal amount, the difference in the amounts that Opal and Gem had at first and in the end remains unchanged.
7 p = 35
1 p = 35 ÷ 7 = 5
Amount that Opal had left
= 10 p
= 10 x 5
= $50
Answer(s): $50
