2) Yo Co had sales per unit of $80 and variable costs of $68. Its fixed costs total $4200. Calculate the following: so a) Contribution margin per unit 4200 b) Contribution margin ratio 15%. c) Break-even in units d) Break-ven in sales If Yo Co wants a target net income (TNI) of $18,000, calculate the Saless required for the target net income in dollars: 3) My Co had the following machine maintenance costs over the last several months. Using the high-low method, estimate both the fixed and variable costs. Hours 280 Variable cost per hour? Month January February March 210 Cost $117,800 110,350 106,675 132,300 125,050 102,900 175 420 April Total Fixed costs? 350 May June 140 uses its machine for 70 hours in July, what should it estimate for uly, what should it estimate for maintenance costs