Answer:
Degree of operating leverage = 3
Percent change in income = 24%
Explanation:
Data provided in the question:
Total contribution margin = $72,000
Pretax net income = $24,000
Expected increase in sales volume = 8%
Now,
Degree of operating leverage = contribution margin ÷ Net operating income
= $72,000 ÷ $24,000
= 3
Percent change in income
= Percent increase in sales × Degree of operating leverage
= 8% × 3
= 24%