charges the hospitals and clinics $110 per hour and has variable costs of $96.80 per hour (this includes the payment to the nurse). Total fixed costs equal $281,820. Required: 1. Calculate the contribution margin per unit and the contribution margin ratio (express the ratio as a decimal rather than a percentage). If required, round your answers to two decimal places. Contribution margin per unit Contribution margin ratio 2. Calculate the sales revenue needed to break even. $ 3. Calculate the sales revenue needed to achieve a target profit of $81,840. $ 4. What if Health-Temp had target operating income (profit) of $100,320 ? Would sales revenue be larger or smaller than the one calculated in Requirement 3 ? By how much