Albert had $255 and his cousin had $21 at first. After they received an equal amount of allowance, Albert had four times as much money as his cousin. How much allowance did each of them receive?
| |
Albert |
His cousin |
Difference |
| Before |
$255 |
$21 |
$234 |
| Change |
+ ? |
+ ? |
|
| After |
4 u |
1 u |
3 u |
The difference in the amounts between Albert and his cousin at first and in the end remains unchanged after each received an equal amount of allowance.
Difference in the amounts between Perry and his cousin
= 4 u - 1 u
= 3 u
3 u = 255 - 21
3 u = 234
1 u = 234 ÷ 3 = 78
Allowance that each of them received
= 1 u - 21
= 78 - 21
= $57
Answer(s): $57
