Chapter 3: Q.43 (page 79)
Use the four-step process to analyze the impact of the advent of the iPod (or other portable digital music players) on the equilibrium price and quantity of the Sony Walkman (or other portable audio cassette players).
Short Answer
Step 1: This solution contains the initial supply and demand diagram.
Step 2) The introduction of the iPod will have an impact on Sony Walkman demand.
Step 3) If the iPod is less expensive than the Walkman, the demand for the Walkman will decline.
Step 4) The Walkman demand curve will shift to the left. The quantity of equilibrium will diminish, as will the price. Within this solution, you'll find an updated diagram.