Question

By using formula,find compound interest and amount 

Principle RS 6400
Rate of interest 12%
Time period 2 year 

formula A = p(1+r*100) N

Answer 1

C.I=1628.16 AND AMOUNT=8028.16

Answer 2

$\mathfrak{Step-By-Step\:Explanation:}$

$\underline{\underline{\bold{Given\:in\:the\:question:}}}$

• Principle = Rs. 6400.
• Rate = 12%.
• Time = 2 years.

$\boxed{\bold{Amount=Principle\left(1+\dfrac{r}{100}\right)^n}}\\\\\\\tt{=6400\left(1+\dfrac{12}{100}\right)^2}\\\\\\\tt{=6400\left(1+\dfrac{3}{25}\right)^2}\\\\\\\tt{=6400\times \dfrac{28}{25}\times\dfrac{28}{25}}\\\\\\\tt{=10.24\times 784}\\\\\\\tt{=8028.16}\\\\\\\boxed{\bold{CI=Amount-Principle}}\\\\\\\tt{=8028.16-6400}\\\\\\\tt{=1628.16}\\\\\\\boxed{\boxed{\bold{CI=Rs.\;1628.16}}}$