Change in Contribution Margin

Head Pops Inc. manufactures two models of solar$-$powered, noise$-$canceling headphones: Sun Sound and Ear Bling models. The company is operating at less than full capacity. Market research indicates that $26,600$ additional Sun Sound and $29,000$ additional Ear Bling headphones could be sold. The operating income by unit of product is as follows:

$\backslash$table$[[,\backslash$table$[[$Sun Sound$],[$Headphones$]],\backslash$table$[[$Ear Bling$],[$Headphones$]]],[$Sales price,$$30\mathrm{.}70,$$$47\mathrm{.}90$