Cross-Price Elasticity. Kitty Russell's Longbranch Cafe in Sausalito recently reduced Nachos Supreme appetizer prices from $5 to $3 for afternoon "early bird" customers and enjoyed a resulting increase in sales from 60 to 180 orders per day. Beverage sales also increased from 30 to 150 units per day.
A. Calculate the arc price elasticity of demand for Nachos Supreme appetizers.
B. Calculate the arc cross-price elasticity of demand between beverage sales and appetizer prices.
C. Holding all else equal, would you expect an additional appetizer price decrease to $2.50 to cause both appetizer and beverage revenues to rise? Explain.