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Calculate the equilibrium level of national income (Y) where Y = C + I +...

Economics
JAMB 2023

Calculate the equilibrium level of national income (Y) where Y = C + I + G; C = 100 + 0.75Y; I = 50; G = 200

  • A. 2000
  • B. 100
  • C. 1500
  • D. 1400
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Correct Answer: Option D
Explanation

y = \(\frac{a + i + G}{1 - b}\)



where b = 0.75
 

= \(\frac{100 + 50 + 200}{1 - 075}\)


= \(\frac{350}{0.25}\)



= 1400

Alternatively:
Y = C + I + G
Y = 100 + 0.75Y + 50 + 200
Y - 0.75Y = 350
Y( 1 - 0.75) = 350
 

= \(\frac{350}{0.25}\)


Y = 1400

 


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NECO June/July 2024 - Get offline past questions & answers - Download objective & theory, all in one app 48789
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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