Assume the following keynesian income-expenditure


Assume the following Keynesian income-expenditure two-sector model:

AD = Cp + Ip

Cp = Co +  c .Y

Ip = Io

where AD is aggregate demand; Cp is planned consumption; Iis planned investment; Cis exogenous consumption; c is the marginal propensity to consume; Y is the level of income (and output); and Io is exogenous investment.

(a) What is the relationship between the 'marginal propensity to consume' and the 'average propensity to consume'?

(b) What is equilibrium Y in terms of Co, c and Io?

(c) Derive the multiplier for a change in Io.

(d) What does this model assume about aggregate supply and the general price level?

(e) Represent this model in a 45? cross-diagram and illustrate the equilibrium level of income.

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Business Management: Assume the following keynesian income-expenditure
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