Ivan had $78 more than George. Every day, Ivan and George would spend an equal amount of money. After 9 days, Ivan was left with 3 times as much money as George. Given that Ivan had $162 at first, how much did each of them spend every day?
| |
George |
Ivan |
Difference |
| Before |
|
$162 |
$78 |
| Change |
- ? |
- ? |
|
| After |
1 u |
3 u |
2 u |
Since both Ivan and George spent an equal amount of money every day, the difference in their amounts remains the same.
Difference in their amounts
= 3 u - 1 u
= 2 u
2 u = 78
1 u = 78 ÷ 2 = 39
Amount that Ivan had in the end
= 3 u
= 3 x 39
= $117
Amount that Ivan had spent
= 162 - 117
= $45
Amount that each of them spent every day
= 45 ÷ 9
= $5
Answer(s): $5
