Q.1. Surgical Systems, Inc., makes a proprietary line of disposable surgical stapling instruments. The company grew rapidly during the 1990s as surgical stapling procedures continued to gain wider hospital acceptance as an alternative to manual suturing. However, price -conscious new millennium. During the past year, Surgical Systems sold 6 million units at a price of $ 14.50, for total revenues of $ 87 million. During the current year, Surgical systems' unit sales have fallen from 6 million units to 3.6 million units following a competitor price cut from $13.95 to $ 10.85 per unit.

A. Calculate the arc cross-price elasticity of demand for Surgical Systems' product.