Give the step-by-step reasoning process and then the final answer. Chad bought 6 packages of cat food and 2 packages of dog food. Each package of cat food contained 9 cans, and each package of dog food contained 3 cans. How many more cans of cat food than dog food did Chad buy?
Chad's cat food total was 6 packages * 9 cans = 54 cans of cat food. Chad's dog food total was 2 packages * 3 cans = 6 cans of dog food. Chad had 54 cans of cat food - 6 cans of dog food = 48 more cans of cat food.
The final answer: 48.