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Given that Y = C + I, where C = 50 + 0.75Y and I =...

Economics
JAMB 2018

Given that Y = C + I, where C = 50 + 0.75Y and I = N45m, what is the equilibrium level of income?

  • A. N20m
  • B. N380m
  • C. N200m
  • D. N180m
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Correct Answer: Option B
Explanation

C = Consumption Function, Y is the income in the economy and I = Investment Expenditure

Given Y = C + I, where C = 50 + 0.75Y and I = N45m

Y = 50 + 0.75Y + 45

Y - 0.75Y = 95

Y(1 - 0.75) = 95

Y = \(\frac{95}{0.25}\) = 380

Therefore, the equilibrium level of income = 380m


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