What will be the ratio of simple interest earned by certain amount at the same rate of interest for 5 years and that for 9 years?	Choose the correct choice from the following answers:
A) 1 : 3
B) 2 : 3
C) 1 : 2
D) 3 : 2
E) 5 : 9
Let the principal be P and rate of interest be R%.   Required ratio =   (P x R x 5)/100 DIVIDED BY	(P x R x 9)/100   =	5PR/9PR	=	5/9	= 5 : 9.   ANSW5 : 9R : 5 : 9
<result>E</result>
What will be the ratio of simple interest earned by certain amount at the same rate of interest for 5 years and that for 9 years?