In: Accounting
If variable cost of goods sold totaled $66,440 for the year (16,610 units at $4 each) and the planned variable cost of goods sold totaled $99,330 (14,190 units at $7 each), the effect of the unit cost factor on the change in contribution margin is:
a.$9,680 increase
b.$49,830 decrease
c.$9,680 decrease
d.$49,830 increase
| 
 A  | 
 Planned variable cost  | 
 $ 7.00  | 
| 
 B  | 
 Actual Variable cost  | 
 $ 4.00  | 
| 
 C = A - B  | 
 Increase in Unit contribution  | 
 $ 3.00  | 
| 
 D  | 
 Actual Units  | 
 16,610  | 
| 
 E = C x D  | 
 Effect of unit cost on contribution margin  | 
 $ 49,830.00  |