Two firms, a and b, produce and sell wine. The demand for
a's wine is given by the equation,
Qa = 200 - Pa + Pb:
In this equation, the price of a's wine is Pa per bottle, and the price of b's wine is
Pb per bottle. a has a marginal cost of MCa = $20 per bottle, and a fixed
cost of FCa = $6000. The demand for b's wine is given by the equation,
Qb = 9000 - 100Pb + 40Pa:
b has a marginal cost of MCb = $10 per bottle, and a fixed cost of FCb =
$10;000. The two firms compete by simultaneously selecting prices.
1) Are the bottles of wine produced by a and b, homo-
geneous products or heterogeneous products? Your answer must reference the two firms
demand functions.