Answer:
$24
Step-by-step explanation:
If "a" represents the amount of Carrie's allowance, her expenditures are ...
a/4 + a/3 + 8 = 22
3a +4a + 96 = 264 . . . . . multiply by 12 to clear fractions
7a = 168 . . . . . . . . . . . . . . subtract 96, collect terms
a = 24 . . . . . . divide by 7
Carrie's allowance was $24.
