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In an economy C = 200 + 0.75Y is the consumption function where C is consumption expenditure and Y is national income. Investment expenditure is 4,000. Calculate equilibrium level of income and consumption expenditure.

Answer» <html><body><p></p>Solution :Consumption function, `C = <a href="https://interviewquestions.tuteehub.com/tag/200-288914" style="font-weight:bold;" target="_blank" title="Click to know more about 200">200</a> + 0.75 Y`, Investment, I = 4,000 <br/> Now `Y = C + I or Y = 200 + 0.75 Y + 4,000` <br/> `Y - 0.75Y = 4,200 or 0.25Y = 4,200 <a href="https://interviewquestions.tuteehub.com/tag/rarr-1175461" style="font-weight:bold;" target="_blank" title="Click to know more about RARR">RARR</a>= 4,200 <a href="https://interviewquestions.tuteehub.com/tag/xx-747671" style="font-weight:bold;" target="_blank" title="Click to know more about XX">XX</a> (100)/(<a href="https://interviewquestions.tuteehub.com/tag/15-274069" style="font-weight:bold;" target="_blank" title="Click to know more about 15">15</a>)` <br/> Income, Y = 16,800 <br/> Consumption <a href="https://interviewquestions.tuteehub.com/tag/expenditure-980222" style="font-weight:bold;" target="_blank" title="Click to know more about EXPENDITURE">EXPENDITURE</a>, `C = 200 + 0.75 Y` <br/> `= 200 + 0.75 (16,800)` <br/> `= 200 + 12,600` <br/> `= 12,800`</body></html>


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