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4. Given the estimated demand function for good 1: Q = 50 - 4P,-3.2P, + 0.017, where P, and P, are prices for good 1 and 2, r
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Answer #1

a) The price coefficient of good 2 is -3.2. It is negative which indicates that if P2 rises, Q1 will fall. Hence good 1 and good 2 are complements. This is because when price of a good increases, its consumption is reduced which means the consumption / quantity demanded of its complement also decreases (both are consumed together, less of one good implies less of the other).

b) Quantity demanded is Q1 = 50 - 4*1.20 - 3.2*3.50 + 0.01*15000 = 184

Cross price elasticity = dQ1/dP2 * P2/Q1

= -3.2*3.50/184

= -0.061

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