[The following information applies to the questions displayed below.]

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	$	60,000
Variable expenses		39,000
Contribution margin		21,000
Fixed expenses		14,700
Net operating income	$	6,300

10. How many units must be sold to achieve a target profit of $12,600?

11. What is the margin of safety in dollars? What is the margin of safety percentage?

12. What is the degree of operating leverage? (Round your answer to 2 decimal places.)

13. Using the degree of operating leverage, what is the estimated percent increase in net operating income of a 5% increase in sales? (Round your intermediate calculations and final answer to 2 decimal places.)