Consider the closed (no exports or imports) Latverian economy in which the consumption function is C = 300 + 0.75DI (where DI = Y − T is Disposable Income) and investment (I) is always $900. Government purchases are fixed at $1,300, and net taxes are fixed at $1,200. The next four questions refer to this model.

What is the marginal propensity to consume in this problem?

0.66

Explanation:

Marginal propensity to consume is the proportion of disposable income that is spent on consumption

Marginal propensity to consume = change in consumption / change in income = C / Y

Gross domestic product (Y) is the sum of all final goods and services produced in an economy within a given period which is usually a year.

In a closed economy, GDP = Consumption + Investment spending + Government Spending

Y = 300 + 0.75(Y - $1,200) + $900 + $1,300

Y = 300 + 0.75Y - $900 + $900 + $1,300

Collect like terms

Y - 0.75Y = $1600

0.25Y = $1600

Y = $6400

Substitute for Y in the consumption function : 300 + 0.75(Y - $1,200)

300 + 0.75($6400 - $1,200)

300 + 0.75($5,200) = $4,200

C = $4200

Marginal propensity to consume = $4,200 / $6400 = 0.66

metallurgy is your answer

the "study of metals and the process of refining ("

note that it says metal. metallurgy has the word "metal" in it, and so is most likely your answer (and is your answer).

~

answer; personality;