Joelle had four times as much money as Zara. After Joelle spent $15 and Zara spent $10, Joelle had $25 more than Zara. How much did Joelle have in the end?
| |
Joelle |
Zara |
| Before |
4 u |
1 u |
| Change |
- $15 |
- $10 |
| After |
4 u - $15 |
1 u - $10 |
Comparing Joelle
and Zara
in the end |
$25 more |
|
If Zara was given another $25, the amounts that Joelle and Zara each had in the end would be the same.
4 u - 15 = 1 u - 10 + 25
4 u - 1 u = 15 + 15
3 u = 30
1 u = 30 ÷ 3 = 10
Amount that Joelle had in the end
= 4 u - 15
= 4 x 10 - 15
= 40 - 15
= $25
Answer(s): $25
