Suppose a firm sells two goods, Good A and Good B. Use the following information to answer questions that follow:

Profit maximizing price of Good A = $6000

MC at profit-maximizing level of output of Good A = $1200

MC at profit-maximizing level of output of Good B = $400

Total revenue of Good A = $80000

Total revenue of Good B = $68000

Rothschild index of Good B = 0.6

Price elasticity of the market demand for Good B = -1.2

2.1. Calculate the price elasticity of demand (Ed) for Good A.

Ed of Good A =__________________