Ivan had three times as much money as Ian. After Ivan spent $121 and Ian spent $31, they had the same amount of money left.
- How much did Ian have at first?
- How much had each of them left in the end?
|
Ivan |
Ian |
Before |
3 u |
1 u |
Change |
- 121 |
- 31 |
After |
3 u - 121 |
1 u - 31 |
The amounts that Ivan and Ian had left in the end is the same.
3 u - 121 = 1 u - 31
3 u - 1 u = 121 - 31
2 u = 90
1 u = 90 ÷ 2 = 45
Amount that Ian had at first
= 1 u
= $45
(a)
Amount that each of them had in the end
= 45 - 31
= $14
Answer(s): (a) $45; (b) $14