Marginal cost is the cost of increasing the quantity produced (or purchased) by one unit. If the fixed cost for n products is $10,000 and the marginal cost is $80, and the total cost is $16,000, what is the value of n?
Choose the most appropriate option.
A) 30  B) 50  C) 60  D) 75  E) 100
Total cost for n products = fixed cost for n products + n*marginal cost --&gt; $16,000 = $10,000 + n * $80 --&gt; n = 75.   Answer: 75.
<result>D</result>
Marginal cost is the cost of increasing the quantity produced (or purchased) by one unit. If the fixed cost for n products is $10,000 and the marginal cost is $80, and the total cost is $16,000, what is the value of n?