Final answer:
To fill a 12-gallon tub using a 4-quart container, Paul needs to fill the container 12 times.
Step-by-step explanation:
First, convert the given number of gallons to quarts by multiplying by the conversion factor 4. Then, divide the total number of quarts needed (12 times 4) by the capacity of the container (4 quarts) to find how many times Paul needs to fill the container.
Conversion: 12 gallons x 4 quarts/gallon = 48 quarts
Number of times to fill the container: 48 quarts ÷ 4 quarts = 12