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