Answer and Explanation: 
A. The computation of variable cost per unit is shown below:- 
Variable cost = Variable material cost + Variable labor cost 
= $10.70 + $6.30 
= $17 
B. The computation of total costs for the year is shown below:- 
Total cost = Variable cost + Fixed cost 
= $280,000 × $17 + $660,000 
= $5,420,000 
C. The computation of cash break-even point and accounting break-even point is shown below:- 
Contribution = Selling price - Variable cost 
= $44.50 - $17 
= $27.5 
Cash break even point = Fixed cost ÷ Contribution per unit 
= $660,000 ÷ $27.50 
= 24,000 units 
Break even point = (Fixed cost + Depreciation) ÷ Contribution per unit 
= ($660,000 + $460,000) ÷ $27.5 
= $1,120,000 ÷ $27.5 
= 40,727.27 units 
or 
= 40,728 units