A furniture manufacturer specializes in wood tables. The tables sell for $150 and incur S60 in variable costs. The company has $11, 700 in fixed costs per month. The company desires to earn an operating profit of $10, 800 per month. (Abbreviation used; CM = contribution margin.) Calculate the required sales in units to earn the target profit using the equation method. Calculate the required sales in units to earn the target profit using the contribution margin method. Calculate the required sales in dollars to earn the target profit using the contribution margin ratio method. Calculate the required sales in units to break even using the contribution margin method