What will be the ratio of simple interest earned by certain amount at the same rate of interest for 6 years and that for 3 years? Options
A) 1 : 3  B) 2 : 1  C) 1 : 2  D) 3 : 2  E) 1 : 4
Let the principal be P and rate of interest be R%.   Required ratio =   (P x R x 6)/100 DIVIDED BY	(P x R x 3)/100   =	6PR/3PR	=	6/3= 
<gadget id="calculator">6/3</gadget>
<output>2</output>
2 : 1.   ANSWER : 2 : 1
<result>B</result>
What will be the ratio of simple interest earned by certain amount at the same rate of interest for 6 years and that for 3 years?