Ramtha Sail Company produces one type of machine with the following costs and revenues for the year

Total revenues $560,000

Total fixed costs $270,000

Total variable costs $140,000

Total units produced and sold 70,000

a. What is the company's contribution margin ratio?

b. What is the company's break-even in units?

c. How many units would the company have to sell to attain a target profit of $15,000 if tax rate is 20%?

d. What is the company's margin of safety in dollars?

e. What is the company's degree of operating leverage?