Please answer all the questions

HP sells two products: Inkjet printers priced at $400 and laser printers priced at $800. The variable expenses per unit are $325 per Inkjet printer and $600 per laser printer. Total fixed expense is $100,000. HP expects that sales mix will be three Inkjet printers to two laser printers.

a. Form a package of Inkjet and laser printers based on the sales mix and calculate the package contribution margin.

b. Calculate the break-even point in units for Inkjet printers and for laser printers.