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CA Foundation · Business Economics · Money Market

In an economy, money demand is L = 600 − 25r (₹ crore, r in %). Initially the money supply is ₹350 crore. The central bank raises supply to ₹450 crore. By how many percentage points does the equilibrium interest rate change?

The equilibrium rate falls by 4 percentage points. With supply of ₹350 crore the rate is 10%, found from 600 − 25r = 350. With supply of ₹450 crore, 600 − 25r = 450 gives 6%. Greater supply lowers the interest rate.

  1. AIt rises by 4 percentage points
  2. BIt falls by 4 percentage pointsCorrect
  3. CIt falls by 2 percentage points
  4. DIt falls by 10 percentage points

Explanation

Initially 600 − 25r = 350 gives r = 10%. After the increase, 600 − 25r = 450 gives r = 6%. So the rate falls by 4 points. The rise option has the wrong direction, and a 2-point fall would come from dividing the 100 crore change by 50 instead of 25.

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