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 Answers:
A) 9%	B) 10%	C) 11%	D) 12%	E) 13%
Explanation:   We can get SI of 3 years = 12005 - 9800= 
<gadget id="calculator">12005 - 9800</gadget>
<output>2_205</output>
2205   SI for 5 years= (2205/3)*5= 
<gadget id="calculator">(2205/3)*5</gadget>
<output>3_675</output>
3675 [so that we can get principal amount after deducting SI]   Principal= 12005 - 3675 = 6125   So Rate = (100*3675)/(6125*5)= 
<gadget id="calculator">(100*3675)/(6125*5)</gadget>
<output>12</output>
12%   Option 12%
<result>D</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