Explanation:
The preparation of the contribution margin income statement is presented below:
Sales (71,500 × $6) $429,000
Less: Variable cost
Commission of 5% of sales ($21,450)
Manufacturing cost (71,500 × $0.45) ($32,175)
Contribution margin $375,375
Less: Fixed cost
Monthly rent ($12,000)
Payment to staff ($79,000)
Net income $284,375