Answer:
$28.70
Step-by-step explanation:
Let b represent the amount Belle has. Then the amount Abe has is b+9, and the amount Cathy has is 3(b+9). The total of their amounts is ...
(b+9) +b +3(b+9) = 179.50
5b +36 = 179.50
5b = 143.50
b = 28.70
Belle has $28.70.
