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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 ?

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 ? Correct Answer 2:3

Hints : Let the principle be P and rate of interest be R% Required ratio = P × R × 6/100 /P × R × 9/100 = 6PR/9PR = 2/3 = 2 : 3

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