Degree of operating leverage Grey Products has fixed operating costs of $380,000, variable operating costs of $16 per unit, and a selling price of $63.50 per unit a. Calculate the operating breakeven point in units. b. Calculate the firm's EBIT at 9,000, 10,000, and 11,000 units, respectively c. With 10,000 units as a base, what are the percentage changes in units sold and P13-9 EBIT as sales move from the base to the other sales levels used in part b? d. Use the percentages computed in part c to determine the degree of operating leverage (DOL) e. Use the formula for degree of operating leverage to determine the DOL at 10,000 units