What will be the ratio of simple interest earned by certain amount at the same rate of interest for 7 years and that for 11 years?	Choose one
A) 8 : 11	B) 9 : 11	C) 7 : 11	D) Data inadequate	E) None of these
Let the principal be P and rate of interest be R%.   ∴ Required Ratio = [(P×R×7/100) /(P×R×11/100)]=1PR/11PR=7/11=7:11   Answer Data inadequate
<result>D</result>
What will be the ratio of simple interest earned by certain amount at the same rate of interest for 7 years and that for 11 years?