How many cans of dog food must Sam buy for his 3 dogs if each dog eats 2 cans per day? Sam only shops once a week.
42 cans. If each dog eats 2 cans per day then in one day the dogs would collectively go through 6 cans (3 dogs * 2 cans). If he only shops once a week Sam would need 7 days worth of food and (7 days * 6 cans per day) = 42 cans