6. Berful Industries has fixed costs of $500,000, unit variable costs of $20.00, and the only product it makes sells for $70 per unit. a. Calculate the contribution margin b. Calculate the contribution margin ratio c. Calculate breakeven in units d. Calculate the revenue required to generate a profit of $100,000 e. Calculate the new breakeven point in units if fixed costs decline to $450,000. f. Calculate the breakeven point in units if the price drops to $50.00 and fixed costs increase to $600,000