Answer: $0.4/pound
Explanation:
To find the cost per pound of each brand, divide the total cost of each brand by the weight of the bag:
For Clean Cats: $10 ÷ 25 pounds = $0.4/pound
For Forever Fresh: $18 ÷ 40 pounds = $0.45/pound
Therefore, the cost per pound of the better deal is $0.4/pound.