Please help me with this accounting question

Exercise 21-22 CVP analysis using composite units LO P4 Handy Home sells windows and doors in the ratio of 8:2 (windows:doors). The selling price of each window is $110 and of each door is $260. The variable cost of a window is $67.50 and of a door is $180.00. Fixed costs are $750,000. (Enter your "per unit" values in two decimal places.) Total per composite unit (1) Determine the selling price per composite unit. Quantity Selling Price per unit Windows Doors Total per composite unit (2) Determine the variable costs per composite unit. Quantity Variable costs per unit Windows Doors Contribution margin per composite unit $ 0.00 0.00 Contribution margin (3) Determine the break-even point in composite units. Choose Numerator: 1 Choose Denominator: = Break Even Units Break even units 1 = (4) Determine the number of units of each product that will be sold at the break-even point. Quantity Number of composite units to break even. Unit sales at break-even point Windows Doors