The simple interest on Rs.10000 at a certain rate of interest in five years is Rs.7200. Find the compound interest on the same amount for two years at the same rate of interest.  Select:
A) 3087.82  B) 3087.89  C) 3087.85  D) 3087.36  E) 3087.22
R = 100 I / PT   =&gt; R = (100 * 7200)/ (10000 * 5)= 
<gadget id="calculator">(100 * 7200)/ (10000 * 5)</gadget>
<output>72/5 = around 14.4</output>
14.4%   CI= P{ [1 + R /100]n - 1}   = 10000 { [ 1 + 14.4 / 100]^2 - 1} = Rs.3087.36   Answer:3087.36
<result>D</result>
The simple interest on Rs.10000 at a certain rate of interest in five years is Rs.7200. Find the compound interest on the same amount for two years at the same rate of interest.