To solve this problem, we use the formula in calculating for the total variable cost (COGS):
Revenue - COGS - SG&A = Pretax profits
where SG & A is calculated
as:
SG & A = (Contribution - Prextax income)
SG & A = ($320,000 - $117,000)
SG & A= $275,000
Calculating for revenue
using the margin ratio:
Contribution margin/Revenue = Contribution Margin Ratio
Revenue = Contribution Margin/Contribution Margin Ratio
Revenue = $320,000/.20
Revenue = $1.6m
Going back to the 1st formula:
Revenue - COGS - SG&A = Pretax profits
1.6m - COGS - 275k = 117k
COGS = $1.6m - $117k - $275k
COGS = $1.208 million