Mathematics for FinancePYQ May 20Question 1305 of 512
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The effective rate of interest corresponding to a nominal rate 3%\displaystyle 3\% p.a payable half yearly is

Options

A3.2%\displaystyle 3.2\% p.a
B3.25%\displaystyle 3.25\% p.a
C3.0225%\displaystyle 3.0225\% p.a
Dnone of these
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Correct Answer

✅ Option c — 3.0225%\displaystyle 3.0225\% p.a

All Options:

  • A3.2%\displaystyle 3.2\% p.a
  • B3.25%\displaystyle 3.25\% p.a
  • C3.0225%\displaystyle 3.0225\% p.a
  • Dnone of these

Detailed Solution & Explanation

**Derivation of Effective Rate of Interest** Given: - Nominal rate of interest (r\displaystyle r) = 3%\displaystyle 3\% per annum - Compounding Frequency = Half-yearly (m=2\displaystyle m = 2) **Step 1: Calculate the periodic rate (i\displaystyle i)** i=rm=3%2=1.5%=0.015 per half-yeari = \frac{r}{m} = \frac{3\%}{2} = 1.5\% = 0.015 \text{ per half-year} **Step 2: Calculate the effective annual interest rate (E\displaystyle E)** E=(1+i)m−1E = (1 + i)^m - 1 E=(1+0.015)2−1E = (1 + 0.015)^2 - 1 E=(1.015)2−1E = (1.015)^2 - 1 E=1.030225−1=0.030225 or 3.0225% p.a.E = 1.030225 - 1 = 0.030225 \text{ or } 3.0225\% \text{ p.a.} Hence, **Option C** is the correct answer.

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