Priceless

When Tracy came home from school, Mom was unloading groceries from the car. "How about giving me a hand?" Mom asked."Sure," said Tracy. When Mom opened the trunk, Tracy saw a huge watermelon. "I'll carry this in." After setting the watermelon on the kitchen table, Tracy hurried back to the car to see if Mom had gotten any other treats. She peeked in one bag after another. "There's one more surprise," Mom said, giving her a wink. "But first, let's get all the groceries into the house."While putting the food away, Tracy looked for the special treat. In the bottom of the last grocery bag, she found a carton of butter pecan ice cream. "Mmm! My favorite flavor," she said. "I bought a box like this at school today." "In the cafeteria?" asked Mom. "No, in our classroom. To teach us about spending and saving, our teacher set out empty food cans and boxes in the room," Tracy explained as Mom scooped out two bowlfuls of ice cream. "Then she handed out pretend money to play store with.""How much