Answer:
c.21%
Step-by-step explanation:
The computation of the contribution margin ratio is shown below
Sales is $822,000
Variable cost ratio 79% of sales
So,
Variable cost (79% of $822,000 ) $649,380
Now contribution margin is
= Sales - variable cost
= $822,000 - $649,380
= $172,620
Now
Contribution margin ratio is
= Contribution ÷ Sales × 100
= $172,620 ÷ $822,000 × 100
= 21%
Therefore the option c is correct