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Simple interest on a certain sum for 6 years is 9/25 of the sum. The rate of interest is1). 6%2). \(6\frac{1}{2}\%\)3). 8%4). \(8\frac{1}{2}\%\) |
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Answer» <P>SI = (P × R × t)/100 SI = Simple interest P = Principal R = rate % t = time in years Given, Simple interest on a certain SUM for 6 years is $(\frac{9}{{25}})$ of the sum ∴ SI = 9P/25 t = 6 years R =? $(\Rightarrow \frac{{9P}}{{25}} = \frac{{P \times 6 \times R}}{{100}})$ ⇒ R = 900/150 = 6% |
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