Gem had $30 more than Eva at first. After Gem and Eva spent an equal amount of money, Eva had
710 as much as Gem. How much money did Gem have left?
| |
Gem |
Eva |
Difference |
| Before |
1 u + $30 |
1 u |
$30 |
| Change |
- 1 |
- 1 |
|
| After |
10 p |
7 p |
3 p |
Difference in the amounts between Gem and Eva
= 10 p - 7 p
= 3 p
Since both Gem and Eva spent an equal amount, the difference in the amounts that Gem and Eva had at first and in the end remains unchanged.
3 p = 30
1 p = 30 ÷ 3 = 10
Amount that Gem had left
= 10 p
= 10 x 10
= $100
Answer(s): $100
