Question

Find the compound interest on Rs 6500 for 2 years at 9% per annum using unitary method

Answer 1

Answer:

Amount= 7722.65

Compound interest = 7722.65 - 6500 = 1222.65

Answer 2

Given:

$\sf\ Principle:- Rs.6500$

$\sf\ Rate:- 9\% per\: annum$

$\sf\ Time:- 2years$

To find:

Compound Interest?

Solution:

$\sf\ A=p(1+\frac{r}{100})^n$

$\dashrightarrow\: \sf\ =Rs 6500(1+\large\frac{9}{100})^2$

$\dashrightarrow\: \sf\ =Rs. 6500(×\large\frac{109}{100})^2$

$\dashrightarrow\: \sf\ =Rs. 6500× \large\frac{11881}{10000}$

$\dashrightarrow\: \sf\ =Rs. \large\frac{772265}{100}$

$\dashrightarrow\: \underline{\boxed{\bf{\orange{ =Rs.7722.65}}}}$

$\large\bold{C.P= \: A\: -\:P}$

$\dashrightarrow\: \sf\ 7722.65-6500$

$\dashrightarrow\: \underline{\boxed{\bf{\purple{=Rs. 1222.65}}}}$