The Foundational $15($Static$)[$L$05-1,$ LO$5-2,$ LO$5-3,$ LO$5-4,$ LO$5-5,$ LO$5-6,$ LO$5-7]$

$[$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$)$:

Foundational $5-15($Static$)$

Assume the amounts of the company's total variable expenses and total fixed expenses were reversed. In other words, assume the

total variable expenses are $$6,000$ and the total fixed expenses are $$12,000.$ Using the degree of operating leverage, what is the

estimated percent increase in net operating income of a $5\%$ increase in unit sales?