Answer:
 50% of market value
Step-by-step explanation:
The actual tax rate on the Combs home is ...
 $8719.38/$361800 = 0.0241 = 24.1 mils
The rate of assessment is ...
 (24.1 mils)/(48.2 mils) = 0.50 = 50%
The Combs pay tax on 50% of their home's market value.