Marginal Costing and Contribution Margin Analysis: A company produces a single product with variable costs of $30 per unit and fixed costs of $50,000. Calculate the contribution margin ratio and breakeven point in units and dollars using marginal costing principles. Discuss how marginal costing analysis helps managers make short-term pricing decisions, product mix optimization, and profit planning strategies. Analyze the differences between absorption costing and marginal costing approaches in profit determination and inventory valuation.