little bit confusing. Please help me with detailed calculation :(

BUSS244 CVP Analysis Q1. The Ks Company Private Limited manufactures three products. Information concerning the three product lines for the month under review is as follows: Unit selling price Sales Mix (in units) Variable costs: Total Manufacturing Marketing Administrative Others $30 $10 $ 5 $ 160 $ 45 $ 20 $ 50 $ 25 $ 10 Total $ 70 V $120 240 Fixed costs: Manufacturing (allocated) Marketing (allocated) Administrative (allocated Others $1,200,000 $ 200,000 $ 120,000 Total I. The contribution margin per unit of producs: A. $120 20-10 50 B. $70 c. 60 nM eelli D. $ 55 2. The weighted-average contribytion margin: init sales ixWA A. $240 B. $%210 C. $160 D. $86.5 E. $52.5 hit CM 03 t 1 D3 210 3. The break-even units for product Oi: fsed Exees BEe.ni. Fixed Epenses unit CM A. 15,238 units B. C. D. 4,500 units E. 3,750 units 9,000 units 7.620 units 160000o 50