Jaslyn had thrice as much money as Sarah. After Jaslyn spent $10 and Sarah spent $4, Jaslyn had $30 more than Sarah. How much did Jaslyn have in the end?
| |
Jaslyn |
Sarah |
| Before |
3 u |
1 u |
| Change |
- $10 |
- $4 |
| After |
3 u - $10 |
1 u - $4 |
Comparing Jaslyn
and Sarah
in the end |
$30 more |
|
If Sarah was given another $30, the amounts that Jaslyn and Sarah each had in the end would be the same.
3 u - 10 = 1 u - 4 + 30
3 u - 1 u = 10 + 26
2 u = 36
1 u = 36 ÷ 2 = 18
Amount that Jaslyn had in the end
= 3 u - 10
= 3 x 18 - 10
= 54 - 10
= $44
Answer(s): $44
