Oslo Company prepared the following contribution format income statement based on a sales volume of 1,000 units (the relevant range of production is 500 units to 1,500 units): Sales $20,000
Variable expenses 12,000
Contribution margin 8,000
Fixed expenses 6,000
Net operating income $2,000

Required:
a. What is the contribution margin per unit?
b. What is the contribution margin ratio?
c. What is the variable expense ratio?