What will be the ratio of simple interest earned by certain amount at the same rate of interest for 9 years and that for 15 years?
Pick:
A) 2:6 B) 3:5 C) 1:4 D) Data inadequate E) None of these
Let the principal be P and rate of interest be R%.   ∴ Required Ratio = [(P×R×9/100) /(P×R×15/100)]=9PR/15PR=9/15=3:5   Answer 3:5
<result>B</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 15 years?