Instruments-R-Us Inc. is considering selling some instruments without varnish ("unfinished"). If they sell them unfinished, they save $2.00 per square inch of finishing costs. The sales price with and without varnish and the area requiring varnish, in square inches, is shown below.
|Instruments-R-Us||Sales Price if Varnished||Sales price without Varnish||Areas to varnish, in square inches|
What is the difference in profits per drum set between finishing or not finishing?