What will be the ratio of simple interest earned by certain amount at the same rate of interest for 9 years and that for 6 years? Choose the correct option
A) 1 : 3	B) 2 : 3	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 9)/100 DIVIDED BY	(P x R x 6)/100   =	9PR/6PR	=	9/6	= 3 : 2.   ANSWER : 3 : 2
<result>D</result>
What will be the ratio of simple interest earned by certain amount at the same rate of interest for 9 years and that for 6 years?