per unit of $165 and a Drive P us). Q Drive has variable costs Vaughn Manufacturing sells two types of sem Q-Drive) and 70% yp computer hard drives. The sales mix is 30% 210. Q-Drive Plus has varilable costs per unit of $180 and a selling price of $255. The weighted-averae unit contribution margin for Vaughn is p price of S 210 0 D O $105.0. O $210. O $66. O $54.0