申論題

[題組二25%]
Each vendor in a city has a marginal cost of $1.5 per burger sold and bears a fixed cost at $50. Suppose the maximum number of burgers any one vendor can produce in a day is 100.

2.If the price of a burger is set at $3.0 by law, how many burgers does each of the existing vendors from the above question choose to sell? How many burgers can each vendor sell out of symmetry solution? Will there be a pressure for new entry? Can you explain this lobbying phen nenon?