Question

If Raja paid total amount of Rs.324.48 after 2 years with compound interest at 4% per
annul,then the principal amounts taken by Raja must be
(a) Rs.300
(b) Rs.320
(c) Rs.310
(d) Rs.316

Answer 1

We use the compound interest formula:


$A = P (1 + \frac{R}{100} )^{n}$



Where:

A = Amount

P = Principal

R =  Rate

n = Number of years




324.48 = P(1 + 4/100)²


324.48 = 1.0816P


P = 324.48/1.0816


P = 300



The correct answer is:


(a) Rs.300

Answer 2

Solution:-

given by:-
Amount (A)= 324.48
year(n)= 2
rate(r) = 4%
princial amount(p) = ?
$by \: formul \: \\ A = p( 1+ \frac{R}{100} )^n \\ 324.48 = p(1 + \frac{4}{100})^2 \\ 324.48 = p {(1 + \frac{1}{25} )}^{2} \\ 324.48 = p {( \frac{26}{25} )}^{2} \\ p = \frac{324.48 \times 625}{676} \\ p = 300$
your right answer is option(a) 300.


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