Q1. Liliana sells DVD's. It costs her $40 an hour to keep the store opem, $500 for monthly rent, and $3 an hour for electricity. How many DVD's will she have to sell to keep the store open for an extra hour to make profit, if each DVD is $12?
Q2. Someone paying $800 to fly from one city to another instead of paying only $100 for a bus trip between the two cities is making an irrational choice and is thus not maximizing his utility. Is this true, Explain?