A producer can produce a product at a variable cost per unit of $6. The producer can sell the product for $10 each. If the fixed cost is $90,000 a. How many units must the producer sell to break-even? b. What is revenue at 20,000 units? What is total cost at 20,000 units? c. How many units must the producer sell in order to earn a profit of $60,000? d. If the producer believes price can be raised without reducing the quantity you found in part c, what should the new price be to earn a profit of $75,000?