a sum of rs. 100 is lent at simple interest of 3 % p. a. for the first month, 9 % p. a. for the second month, 27 % p. a. for the third month and so on. what is the total amount of interest earned at the end of the year approximately
Pick one.
A) rs . 797160
B) rs . 791160
C) rs . 65930
D) rs . 66430
E) rs . 67430
<gadget id="calculator">3 ** 12</gadget>
<output>531_441</output>

<gadget id="calculator">531_441 - 1</gadget>
<output>531_440</output>

<gadget id="calculator">531_440 * 3</gadget>
<output>1_594_320</output>

<gadget id="calculator">12 * 2</gadget>
<output>24</output>

<gadget id="calculator">1_594_320 / 24</gadget>
<output>66_430</output>

<result>D</result>
a sum of rs. 100 is lent at simple interest of 3 % p. a. for the first month, 9 % p. a. for the second month, 27 % p. a. for the third month and so on. what is the total amount of interest earned at the end of the year approximately
divide(multiply(subtract(power(3, const_12), const_1), 3), multiply(const_12, const_2))
total amount of interest is i = p / 100 * 1 [ 3 / 12 + 9 / 12 + 27 / 12 … . 312 / 12 where p = 100 ; i = 1 / 12 ( 3 + 9 + … . . 312 ) i = 1 / 12 ( 3 ( 312 - 1 ) ) / 3 - 1 = 531440 * 3 / 12 * 2 = rs . 66430 answer : d