Plz help me #3 and #4

Hale Company sells 30,000 units at $15 per unit. Variable costs are $9 per unit, and fixed costs are $42000. Determine the (a) contribution ratio, (b) unit contribution margin, and (c) income from operations The Towny Company sells a product for $120 per unit. The variable cost is $40 per unit, and fixed costs are $270,000. Determine the (a) break-even points in sales units if the company desires a target profit of $36,000