A manufacturer of tennis rackets makes a profit of $15 for each oversized racket and $8 for each standard racket. To meet dealer demand, the daily production of standard rackets must be between 30 and 80 and the production of oversized rackets must be between 10 and 30. To maintain high quality, the total number of rackets produced must not exceed 80 per day. 

To find the minimum cost and determine how many of each type must be produced daily to maximize profit.