William went to the grocery store and bought 8 lbs of ground beef at a discounted price. He gave the cashier two 20 dollar bills, and she gave him $7.12 in change. What was the price per pound of ground beef?
take $40 (how much he paid with) minus $7.12 ( how much he got back) to find out how much he paid for the meat - $32.88. Then divide that by 8 to find price per pound. 32.88/8 = 4.11