Question

please tell the formula of
1. amount
2.CI
3.SI

Answer 1

AMOUNT=P*{1+R/N}^NT
COMPOUND INTEREST =AMOUNT -PRINCIPLE
SIMPLE INTEREST=P*(1+RT)
I HOPE THIS HELPED..

Answer 2

i) Amount = Principal + Interest
Here, Interest can be either Simple interest of compound Interest.

ii) To calculate CI, you need to calculate Amount and subtract principal from it.

$Amount=P[1+ \frac{r}{100n} ]^{nt}$
where
P = principal
r = Interest rate in percentage
n = number of time it is compounded in a year
t = time period in years

So CI is given by
$CI=A-P=P[1+ \frac{r}{100n}] ^{nt}-P=P[(1+ \frac{r}{100n}) ^{nt}-1]$

iii)To calculate SI, you can use the formula

$SI= \frac{Ptr}{100}$
where
P = principal
t = time period
r = Interest rate in percentage