The sales manager of Serito Doll Company has suggested that an expanded advertising campaign costing $$40,000$ would increase the sales and profits of the company. He has developed the following probability distribution for the effect of the advertising campaign on company sales.

$\backslash$table$[[\backslash$table$[[$Sales increase$],[($units$)]],$Probability$],[15,000,0\mathrm{.}10],[30,000,0\mathrm{.}35],[45,000,0\mathrm{.}10],[60,000,0\mathrm{.}25],[75,000,0\mathrm{.}20]]$

The company sells the dolls at $$5\mathrm{.}20$ each. The cost of each doll is $$3\mathrm{.}20.$ Serito's expected incremental profit, if the advertising campaign is adopted, would be