Isaac had
15 as much money as Levi at first. After Isaac received $315 and Levi received $91, both of them had the same amount of money. How much did Levi have at first?
|
Isaac |
Levi |
Before |
1 u |
5 u |
Change |
+ 315 |
+ 91 |
After |
1 u + 315 |
5 u + 91 |
The amount that Isaac and Levi had in the end is the same.
1 u + 315 = 5 u + 91
5 u - 1 u = 315 - 91 = 224
4 u = 224
1 u = 224 ÷ 4 = 56
Amount that Levi had at first
= 5 u
= 5 x 56
= $280
Answer(s): $280