a sum amounts to rs. 4851 in 2 years at the rate of 5 % p. a. if interest was compounded yearly then what was the principal?
Select
A) s . 4000	B) s . 5000	C) s . 4400	D) s . 4800	E) s . 5800
<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">(1/20) + 1</gadget>
<output>21/20 = around 1.05</output>

<gadget id="calculator">(21/20) ** 2</gadget>
<output>441/400 = around 1.1025</output>

<gadget id="calculator">4_851 / (441/400)</gadget>
<output>4_400</output>

<result>C</result>
a sum amounts to rs. 4851 in 2 years at the rate of 5 % p. a. if interest was compounded yearly then what was the principal?
divide(4851, power(add(divide(5, const_100), const_1), 2))
"ci = 4851 , r = 5 , n = 2 ci = p [ 1 + r / 100 ] ^ 2 = p [ 1 + 5 / 100 ] ^ 2 4851 = p [ 21 / 20 ] ^ 2 4851 [ 20 / 21 ] ^ 2 4400 answer : c"