The table given below shows the real gross domestic product (GDP) ,consumption,and planned investment in an economy.The marginal propensity to save (MPS) in the economy is _____.
Table 9.3
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$$\begin{array}{ccc}\begin{array}{c}\text{ Real }\\ \text{ GDP }(\$)\end{array}& \text{ Consumption }(\$)& \begin{array}{c}\text{ Planned }\\ \text{ Investment }(\$)\end{array}\\ 0& 140& 100\\ 100& 220& 100\\ 200& 300& 100\\ 300& 380& 100\\ 400& 460& 100\\ 500& 540& 100\\ 600& 620& 100\\ 700& 700& 100\\ 800& 780& 100\\ 900& 860& 100\\ 1,000& 940& 100\\ 1,100& 1,020& 100\\ 1,200& 1,100& 100\\ 1,300& 1,180& 100\end{array}$$

A) 0
B) 0.1
C) 0.2
D) 0.8
E) 20

Marginal Propensity

A measure that quantifies the change in an economic variable, such as spending or saving, in response to a change in income.

Real Gross Domestic Product

An inflation-adjusted measure that reflects the value of all goods and services produced by an economy in a specific period.

Planned Investment

Expenditures intended by businesses to purchase physical capital goods, which are expected to produce future benefits.