of $30,000 and variable costs per unit of $10. Calculate the following: 1) Total variable costs 2) Total Contribution Margin 3) Contribution margin ratio (do not enter \% or period ": if answer is 30% enter 30 ) 4) Operating Income 5) Break even in dollars 6) Break even in units 7) Margin of safety 8) Number of units needed for target profit of $40,000 9) Total sales dollar amount needed for target profit of $40,000 10) Total sales dollar amount needed for target profit of $30,000 Note: Do not enter commas or periods in your answer. You should only enter the number. If you answer is 20,000 you should enter 20,000 . If your answer is 30% you should enter 30