Table 21.4 $\begin{array}{|c|r|}
\hline \text { Output (Units per Day) } & \text { Total Cost (Dollars per Day) } \
\hline 0 & 16 \
\hline 1 & 30 \
\hline 2 & 42 \
\hline 3 & 58 \
\hline 4 & 78 \
\hline
\end{array}$
The marginal cost of the fourth unit of output in Table 21.4 is
A)$4.00.
B)$20.00.
C)$16.00.
D)$19.50.

Question

Table 21.4 $\begin{array}{|c|r|}
\hline \text { Output (Units per Day) } & \text { Total Cost (Dollars per Day) } \
\hline 0 & 16 \
\hline 1 & 30 \
\hline 2 & 42 \
\hline 3 & 58 \
\hline 4 & 78 \
\hline
\end{array}$
 The marginal cost of the fourth unit of output in Table 21.4 is
A)$4.00.
B)$20.00.
C)$16.00.
D)$19.50.

Quizplus · Accepted Answer

The marginal cost of the fourth unit is the change in total cost when output increases from 3 to 4 units: $78 - 58 = 20$.

Table 214 The Marginal Cost of the Fourth Unit of Output in