A sum of money invested at compound interest to Rs. 800 in 3 years and to Rs 830 in 4 years. The
rate on interest per annum is. Choose the correct choice from the following choices
A) 4.60% B) 5.55% C) 7.66% D) 7.0% E) 3.75%
Explanation:   S.I. on Rs 800 for 1 year = 30   Rate = (100*30)/(800*1)= 
<gadget id="calculator">(100*30)/(800*1)</gadget>
<output>15/4 = around 3.75</output>
3.75%   Answer: 3.75%
<result>E</result>
A sum of money invested at compound interest to Rs. 800 in 3 years and to Rs 830 in 4 years. The
rate on interest per annum is.