If variable cost of goods sold totaled $64,172 for the year (16,043 units at $4 each) and the planned variable cost of goods sold totaled $113,832 (14,229 units at $8 each), the effect of the quantity factor on the change in contribution margin is: Os 514512 decrease Ob 57,296 in Oc. $14.312 Od 59.26 de If fixed costs are $561,000 and the unit contribution margin is $8.00, what is the break-even point in unitsit variable costs are decreased by $0.50 a unit? Os 70,135 Ob. 66.000 Oc 74.300 Od. 60.000 Rusty Co. sells two products, X and Y. Last year, Rusty sold 5,000 units of X and 35,000 units of Y. Related data are: Product X Unit Selling Price $110.00 70.00 Unit Variable Unit Contribution Cost Margin $70.00 $40.00 50.00 20.00 Y What was Rusty Co.'s weighted average unit contribution margin? Oa. $60.00 Ob. 540,00 Oc. $20.00 Od. 522.50