1. A gourmet ice cream store has fixed cost expenses (rent, utilities) of $100,000/year. The ice cream cost $5/liters to produce and sell for $7 per liter. The store sells around 150,000 liters of ice cream per year. If the gourmet ice cream store is going to operate for 5 years what is the payback period for an investment of 400,000 in the first year.