Sara has two puppies, Sonny & Cher. Every month she purchases enough food to feed her puppies for the month. Sonny eats 8.25 cans of food per week. Cher eats 15 1/2 cans of food per week. Sara purchases a 40 can variety pack of Cute Puppy food that costs $21.



7. Smarty Puppy Outlet Store offers the same food in single cans for 55 cents each

with no need to purchase a 40 can pack. Find the unit rate for one can from the variety pack. Compare this cost to the cost of purchasing singles from Smarty Puppy Outlet Store to determine which option is the best buy.