An increase in spending of $25 billion increases real gdp from $600 billion to $700 billion. The marginal propensity to consume must be "4".
The marginal propensity to consume is refers to as the proportion of any change in income that is spent on consumption.
In economics, this term is used to refer to the measurement made in order to determine consumption when the rent is increased by one unit. This measurement is nothing more than a mathematical relationship to calculate how people invest in consumption or save the income that is increased.
Calculation:
[tex]MPC=\frac{change in consumption}{change in income} \\MPC=\frac{100}{25} \\MPC=4[/tex]
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