a cost equation? 3. At the high level of activity in November, 5,000 machine hours were run and power costs were $18,000. In April, a month of low activity, 2,000 machine hours were run and power costs amounted to $9,000 Using the high-low method, what is the estimated fixed cost element of power costs? 4. Sales are $500,000 and variable costs are $300,000. What is the contribution margin ratio? 5. Arms Industries has a contribution margin of $240,000 and a contribution margin ratio of 30%. How much are total variable costs? 6. At the break-even point of 2,000 units, variable costs are $8,000, and fixed costs are $96,000. How much is the selling price per unit? A company has total fixed costs of $240,000 and a contribution margin ratio of 20%. What is the total sales necessary to break even? 7. Fixed costs are $900,000 and the variable costs are 75% of the unit selling price, what is the break-even point in dollars? 8. 9. Fixed costs are $3,000,000 and the unit contribution margin is S150. What is the break-even point? 10. Adel, Inc. sells MP3 players for $60 each. Variable costs are $40 per unit, and fixed costs total $120,000. What sales are needed by Adel to break even