Answer:
$3,000
Explanation:
The computation of the degree of operating leverage is shown below:
Degree of operating leverage = (Sales - Variable costs) ÷ (Sales - Variable costs - Fixed costs)
15 = $45,000 ÷ net operating income
So, the net operating income would be
= $45,000 ÷ 15
= $3,000
The (Sales - Variable costs) = Contribution margin
The (Sales - Variable costs - Fixed costs) = EBIT or net operating income
And, the contribution margin would equal to
= Sales level × contribution margin ratio
= $225,000 × 20%
= $45,000