Erika had $84 less than Xylia at first. After Xylia and Erika spent an equal amount of money, Erika had
310 as much as Xylia. How much money did Erika have left?
|
Erika |
Xylia |
Difference |
Before |
1 u |
1 u + $84 |
$84 |
Change |
- 1 |
- 1 |
|
After |
3 p |
10 p |
7 p |
Difference in the amounts between Xylia and Erika
= 10 p - 3 p
= 7 p
Since both Xylia and Erika spent an equal amount, the difference in the amounts that Xylia and Erika had at first and in the end remains unchanged.
7 p = 84
1 p = 84 ÷ 7 = 12
Amount that Erika had left
= 3 p
= 3 x 12
= $36
Answer(s): $36