Mr zambito buys a 3 1/2 - pound bag of dog food every 3 weeks mr zambito feeds his dog the same amount of dog food each day how many pounds of dog food does his dog eat each year show your work

3 1/2 pound = 7/2 pounds.

We know that the dog eats 7/2 (3.5) pounds every 21 days since there are 7 days in a week and Mr. Z only buys dog food every 3 weeks.

Set up a proportion. 3.5 lb = x

21 days 365 days

Cross multiply and divide. 3.5 lb x 365 days = 1277.5 / 21 days = 60.83 lb