Marty wants to buy a gallon of lemonade, and a gallon jug costs $3.89, while a pint costs $0.59. He wants to know how much money he would save by buying the gallon jug instead of multiple pints
Part I: How many pints are in a gallon?
Part II: How much money would Marty spend if he bought multiple pints?
Part III: How much money would Marty save by buying the gallon jug instead of multiple pints?