Description 
Max again stands at the Ostrich Burger 
counter.  He sees two choices on the 
menu--Ostrich burgers and Ostrich 
nuggets. He likes both, and he realizes 
that there are numerous combinations 
of burgers and nuggets he could 
consume. 

The Forces of Demand
Purchasing Power

Audio Transcript

Narrator: Max has ten dollars and wants to know how to maximize his utility. He could spend all his money on O-burgers and buy five of them...or he could spend it all on O-nuggets and buy ten of them...OR...he can buy a combination of the two, for example, 3 O-burgers and 4 O-Nuggets. 

Narrator: This graph illustrates the many different combinations of Burgers and Nuggets that Max can afford to buy. This is his budget constraint. It represents his purchasing power. 

Narrator: Let's consider Max's utility curve, or more precisely, his indifference curve. The graph shows an indifference curve representing a constant utility that Max receives from various combinations of burgers and nuggets. Referring to the budget line, we see that Max can afford all the combinations between points a and b on this indifference curve. 

Narrator: Has he maximized his utility? 

Narrator: No--because at points between A and B he's not getting the most number of goods for his $10.  If Max didn’t have to worry about price he’d choose to have more of everything and be operating on a higher indifference curve.  But he is constrained by his budget. He cannot afford such a high level of utility. 

Narrator: The optimal indifference curve intercepts the budget line only once. Point C represents the highest level of utility Max can attain on his budget. To maximize his utility and get the most food for his money, Max should purchase and consume 3 O-burgers and 4 O-nuggets. 

Marge: Enjoy your lunch! 

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