You have 20 bucks in your pocket.
You got a paycheck this morning from part-time work: $50.00
You bought a magazine in the store next to school at lunch: $6.95
You bought breakfast at McDonalds: $9.95
You take a friend to the show. It's the 8 p.m. show: $20
A friend pays you back $15.00 in the afternoon.
You buy two juices from the machine in the cafeteria at lunch: $4