Final answer:
Container b holds 8.96 gallons of water.
Step-by-step explanation:
To find out how many gallons of water container b holds, we start with the information that container a holds 8 gallons of water. Container b holds 12% more than container a, which means it holds 12% of 8 gallons more.
To calculate the amount, we multiply 8 gallons by 12% (0.12). That gives us 0.96 gallons. Finally, we add this amount to the 8 gallons in container a to get the total amount of water in container b, which is 8 + 0.96 = 8.96 gallons.