Ian had $199 and his brother had $24 at first. After they received an equal amount of allowance, Ian had twice as much money as his brother. How much allowance did each of them receive?
| |
Ian |
His brother |
Difference |
| Before |
$199 |
$24 |
$175 |
| Change |
+ ? |
+ ? |
|
| After |
2 u |
1 u |
1 u |
The difference in the amounts between Ian and his brother at first and in the end remains unchanged after each received an equal amount of allowance.
Difference in the amounts between Perry and his brother
= 2 u - 1 u
= 1 u
1 u = 175
Allowance that each of them received
= 1 u - 24
= 175 - 24
= $151
Answer(s): $151
