The formula for finding the annual installment, when A is the amount taken on loan, where r% is the rate of interest, n is the number of installments, is:

\(\text{Installment}= \frac{{100A}}{{{r^n}}}\)

\(\text{Installment} = \frac{A}{{1 - {{\left( {\frac{{100}}{{100 + r}}} \right)}^n}}} \times \frac{r}{{100}}\)

\(\text{Installment}= \frac{A}{{1 + {{\left( {\frac{{100}}{r}} \right)}^n}}} \times \frac{r}{{100}}\)

\(\text{Installment} = \frac{{rnA}}{{100}}\)

The formula for finding the annual installment, when A is the amount t

1.	The formula for finding the annual installment, when A is the amount taken on loan, where r% is the rate of interest, n is the number of installments, is:
A.	\(\text{Installment} = \frac{A}{{1 - {{\left( {\frac{{100}}{{100 + r}}} \right)}^n}}} \times \frac{r}{{100}}\)
B.	\(\text{Installment}= \frac{A}{{1 + {{\left( {\frac{{100}}{r}} \right)}^n}}} \times \frac{r}{{100}}\)
C.	\(\text{Installment}= \frac{{100A}}{{{r^n}}}\)
D.	\(\text{Installment} = \frac{{rnA}}{{100}}\)
Answer» C. \(\text{Installment}= \frac{{100A}}{{{r^n}}}\)