Eva had $21 more than Gwen at first. After Eva and Gwen spent an equal amount of money, Gwen had
47 as much as Eva. How much money did Eva have left?
| |
Eva |
Gwen |
Difference |
| Before |
1 u + $21 |
1 u |
$21 |
| Change |
- 1 |
- 1 |
|
| After |
7 p |
4 p |
3 p |
Difference in the amounts between Eva and Gwen
= 7 p - 4 p
= 3 p
Since both Eva and Gwen spent an equal amount, the difference in the amounts that Eva and Gwen had at first and in the end remains unchanged.
3 p = 21
1 p = 21 ÷ 3 = 7
Amount that Eva had left
= 7 p
= 7 x 7
= $49
Answer(s): $49
