and doors in the ratio of 8.2 (windows doors). The selling price of each window is $200 and of each dodr Handy Home sells windows is $500. The variable cost of a window is $125 and of a door is $350. Fixed costs are $900,000 unit Quantty Selling Price per unitTotal per composite unit Windows ook int rint erences Doors Quantity Variable costs per unit Total per composite unt Windows Doors Contresution magn per conposde unt Contribution margin