$$\begin{array}{l}
\begin{array} { | c | c | }
\hline \begin{array} { c }
\text { Disposable Income } \
\text { (Billions of dollars per year) }
\end{array} & \begin{array} { c }
\text { Total Consumption } \
\text { (Billions of dollars per year) }
\end{array} \
\hline \$ 0 & \$ 50 \
\hline 200 & 210 \
\hline
\end{array}\
\text { Table } 9.1
\end{array}$$ What is the marginal propensity to save in Table 9.1?
A)0.05.
B)0.80.
C)0.20.
D)0.24.

Question

$$\begin{array}{l}
\begin{array} { | c | c | } 
\hline \begin{array} { c } 
\text { Disposable Income } \
\text { (Billions of dollars per year) }
\end{array} & \begin{array} { c } 
\text { Total Consumption } \
\text { (Billions of dollars per year) }
\end{array} \
\hline \$ 0 & \$ 50 \
\hline 200 & 210 \
\hline
\end{array}\
\text { Table } 9.1
\end{array}$$ What is the marginal propensity to save in Table 9.1?
A)0.05.
B)0.80.
C)0.20.
D)0.24.

Quizplus · Accepted Answer

The marginal propensity to consume (MPC) is calculated as the change in consumption divided by the change in income. Here, MPC = (210 - 50) / (200 - 0) = 160 / 200 = 0.80. The marginal propensity to save (MPS) is 1 - MPC, so MPS = 1 - 0.80 = 0.20.

What Is the Marginal Propensity to Save in Table 9