Answer:
Option (c) is correct.
Explanation:
Variable cost as a percent of sales:
= (Variable expenses ÷ Sales) × 100
= ($3,000,000 ÷ $5,000,000) × 100
= 60%
If Sales = X
then Variable cost is 0.6X (i.e. 60% of Sales)
Sales - Variable cost - fixed expenses = net operating income
X - 0.6X - 1,500,000 = 300,000
0.4X = 300000 + 1500000 = 1800000
X = 1800000 ÷ 0.4
= 4,500,000