[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	$	90,000
Variable expenses		49,500
Contribution margin		40,500
Fixed expenses		33,210
Net operating income	$	7,290

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.)