Mary helped her mom make pecan pies. She could buy 20 ounces of pecans for 7.80 at Food Depart while Food Mart sells a 32.5 ounce bag of pecans for 7.15 - Which store has the best buy on pecans?
Food Mart sells more pecans for less money, so it ischeaper.The actual costs are:Food Depart: 7.80 / 20 = 0.39 /ounceFood Mart: 7.15 /32.5 = 0.22 / ounce