Question
What will be the ratio of simple interest earned by
certain amount at the same rate of interest for 4 years and 6 years ?Solution
Let 'P' be the principle amount.  And R% be the rate of interest  Then required ratio = [(P× 4× R)/100]/[(P× 6× R/100)]  => (4× P× R)/(6× P× R) = 2:3
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