Answer:
(a) -$326400
(b) -$56000
Explanation:
We have given actual variable cost of goods sold for a product = $140 per unit
Planned variable cost of goods sold = $136 per unit
Volume is increased by 2400 units to 14000 units
So planned units of sales = 14000 - 2400 = 11600
(a) Variable cost quantity factor is given by
Variable cost quantity factor = ( Planned units of sales - actual units of sales )×planned units of cost
= ( 11600 - 14000 ) ×136 = -$326400
(B) Unit cost factor = ( Planned cost per unit - actual cost per unit )×actual units sold
= ( 136 - 140 ) ×14000 = -$56000