Question 32

When principal P is compounded semi-annually at r% per annum for t years, then amount = ___

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Solution

When principal P is compounded semi-annually at r% per annum for t years.
i.e. Rate = $\frac{r}{2}$ and time = 2 $\times$ t
Then, Amount = Principal ${(1 + \frac{R a t e}{200})}^{2 \times T i m e}$
i.e $A = P {(1 + \frac{r}{200})}^{2 t}$

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Question 58

The compound interest on a sum of Rs P for T years at R% per annum compounded annually is given by the formula P $(1 + \frac{R}{100})$

If P is principal, R is rate of interest per annum compounded annually and N is number of years then amount is given by:

The formula for amount A when the principal P is compounded annually at r% per year for t years is ______ .

4913

4 \frac{1}{2}

6 %

R s, 12, 800

1

7 \frac{1}{2} %

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