A sum of money amounts to Rs. 9800 after 5 years and Rs. 12005 after 8 years at the same rate of simple interest. The rate of interest per annum is: Choose the correct choice from the following options.
A) 22 B) 88 C) 12 D) 73 E) 29
Explanation:   S.I. for 3 years = Rs. (12005 - 9800) = Rs. 2205.   S.I. for 5 years = Rs. = Rs.3675   Principle = Rs.(9800-3675) = Rs.6125   Hence, Rate = =12%   Answer: 12) 12%
<result>C</result>
A sum of money amounts to Rs. 9800 after 5 years and Rs. 12005 after 8 years at the same rate of simple interest. The rate of interest per annum is: