Dana had $18 more than Rachel at first. After Dana and Rachel spent an equal amount of money, Rachel had
47 as much as Dana. How much money did Dana have left?
|
Dana |
Rachel |
Difference |
Before |
1 u + $18 |
1 u |
$18 |
Change |
- 1 |
- 1 |
|
After |
7 p |
4 p |
3 p |
Difference in the amounts between Dana and Rachel
= 7 p - 4 p
= 3 p
Since both Dana and Rachel spent an equal amount, the difference in the amounts that Dana and Rachel had at first and in the end remains unchanged.
3 p = 18
1 p = 18 ÷ 3 = 6
Amount that Dana had left
= 7 p
= 7 x 6
= $42
Answer(s): $42