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The effective rate per annum equivalent to a nominal rate of 8% compounded semi-annually is

Solution

✅ Correct Option: 3

The nominal rate is 8% per annum, compounded semi-annually. This means the interest is applied 2 times per year.

The effective annual rate formula is:

Effective Annual Rate =(1+rn)n−1= (1 + \frac{r}{n})^n - 1

where r=0.08r = 0.08 (nominal rate) and n=2n = 2 (compounding periods per year).


The rate per compounding period:

0.082=0.04\frac{0.08}{2} = 0.04


Calculating the effective rate:

(1+0.04)2−1(1 + 0.04)^2 - 1

=(1.04)2−1= (1.04)^2 - 1

=1.0816−1= 1.0816 - 1

=0.0816= 0.0816


Converting to percentage:

0.0816×100=8.16%0.0816 \times 100 = 8.16\%

The effective annual rate is 8.16%.

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