Exercise 22-17 a-d Cullumber Bucket Co., a manufacturer of rain barrels, had the following data for 2019. Sales Sales price Variable costs Fixed costs 2,990 units $40 per unit $20 per unit $35,880 What is the contribution margin ratio? Contribution margin ratio What is the break-even point in dollars? Break-even point & What is the margin of safety in dollars and as a ratio? Margin of safety Margin of safety ratio If the company wishes to increase its total dollar contribution margin by 30% in 2020, by how much will it need to increase its sales if selling price per unit, variable price per unit and total fixed costs remain constant? Total increase in sales required: t