Simple interest on a certain sum at a certain annual rate of interest is $\frac{16}{25}$ of the sum. If the number representing rate per cent and time in years be equal then the rate of interest is
Simple interest on a certain sum at a certain annual rate of interest is $\frac{16}{25}$ of the sum. If the number representing rate per cent and time in years be equal then the rate of interest is 1). 8% 2). $11\frac{1}{2}$% 3). $12\frac{1}{2}$% 4). $12\frac{1}{4}$%
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2018-05-02 20:32:54 | Votes
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This is the right answer
Let the rate of interest be r% and principal be P. According to the question
$\frac{16P}{25}$ = $\frac{P \times r\times r}{100 }$
r =8%
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