Last month, Laredo Company sold 510 units for $55 each. During the month, fixed costs were $5,478 and variable costs were $22 per unit. Required: 1. Determine the unit contribution margin and contribution margin ratio. 2. Calculate the break-even point in units and sales dollars. 3. Compute Laredo's margin of safety in units and as a percentage of sales. Complete this question by entering your answers in the tabs below. Required 1 Required 2 Required 3 Determine the unit contribution margin and contribution margin ratio. (Round your whole percentage.) Unit Contribution Margin Contribution Margin Ratio %