Question
What will be the ratio of simple interest earned by certain amount at the same rate of interest for 6 years and that for 9 years?
Answer: Option C
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Let the principal be P and rate of interest be R%.
So, Required ratio = \(\frac{\left(\frac{P\times R\times6}{100}\right)}{\left(\frac{P\times R\times9}{100}\right)}=\frac{6PR}{9PR}=\frac{5}{9}=2:3\)
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