Kathy had $27 less than Betty at first. After Betty and Kathy spent an equal amount of money, Kathy had
47 as much as Betty. How much money did Kathy have left?
|
Kathy |
Betty |
Difference |
Before |
1 u |
1 u + $27 |
$27 |
Change |
- 1 |
- 1 |
|
After |
4 p |
7 p |
3 p |
Difference in the amounts between Betty and Kathy
= 7 p - 4 p
= 3 p
Since both Betty and Kathy spent an equal amount, the difference in the amounts that Betty and Kathy had at first and in the end remains unchanged.
3 p = 27
1 p = 27 ÷ 3 = 9
Amount that Kathy had left
= 4 p
= 4 x 9
= $36
Answer(s): $36