The following accompanying table shows the relationship between the speed of a computer's CPU and its benefits and costs. Assume that all other features of the computer are the same (that is, CPU speed is the only source of variation), and only the CPU speeds listed below are available for purchase.
$\begin{array}{|c|c|c|c|c}
\hline \text { CPU GHz } & \text { Total Benefit } & \text { Marginal Benefit } & \text { Total Cost } & \text { Marginal Costs } \
\hline 2.0 & \$ 1,000 & & \$ 900 & \
\hline 2.5 & \$ 1,400 & & & \$ 100 \
\hline 3.0 & & \$ 300 & \$ 1,200 \
\hline 3.5 & \$ 1,900 & & \$ 1,500 & \
\hline 4.0 & \$ 2,000 & & & \$ 400 \
\hline
\end{array}$
The marginal benefit of upgrading from a 2.0GHz computer to a 2.5GHz computer is:

Question

The following accompanying table shows the relationship between the speed of a computer's CPU and its benefits and costs. Assume that all other features of the computer are the same (that is, CPU speed is the only source of variation), and only the CPU speeds listed below are available for purchase.  
$\begin{array}{|c|c|c|c|c}
\hline \text { CPU GHz } & \text { Total Benefit } & \text { Marginal Benefit } & \text { Total Cost } & \text { Marginal Costs } \
\hline 2.0 & \$ 1,000 & & \$ 900 & \
\hline 2.5 & \$ 1,400 & & & \$ 100 \
\hline 3.0 & & \$ 300 & \$ 1,200 \
\hline 3.5 & \$ 1,900 & & \$ 1,500 & \
\hline 4.0 & \$ 2,000 & & & \$ 400 \
\hline
\end{array}$  
The marginal benefit of upgrading from a 2.0GHz computer to a 2.5GHz computer is:

Quizplus · Accepted Answer

The marginal benefit is the additional benefit received from moving from one level to another, in this case, from a 2.0GHz computer to a 2.5GHz computer. It is calculated as the difference in total benefits between the two levels: $1,400 - $1,000 = $400.

The Following Accompanying Table Shows the Relationship Between the Speed of a Computer's