The marginal profit from the production and sale of x barbeque grills is given by P`(x) = 52-0.8x dollars per grill. Find the average marginal profit from the first 40 grills produced and sold.

Answer 1

P'(40)/40 = (51 - 0.8·40)/40 = 0.5 dollars per grill in average when production level is 40 grills barbeque