A sum of Rs 12,500 amounts to Rs. 15,500 in the 4 years at the rate of simple interest. Find the rate percent  Choose the correct choice from the following options:
A) 6 %
B) 7 %
C) 8 %
D) 9 %
E) 10 %
Explanation:   S.I.=P∗R∗T/100=&gt;R=S.I.∗100/P∗T   So, S.I = 15500 - 12500= 
<gadget id="calculator">15500 - 12500</gadget>
<output>3_000</output>
3000.=&gt;R=3000∗100/12500∗4=6%   Option 6 %
<result>A</result>
A sum of Rs 12,500 amounts to Rs. 15,500 in the 4 years at the rate of simple interest. Find the rate percent