SATHEE: Quantitative Aptitude Ques 1806

Quantitative Aptitude Ques 1806

Question: The simple interest on a sum of money is $ \frac{1}{9} $ of the principal and the number of years is equal to rate per cent per annum. The rate per annum is

Options:

A) $ 3 $ %

B) $ \frac{1}{3} $ %

C) $ 3\frac{1}{3} $ %

D) $ \frac{3}{10} $ %

Show Answer

Answer:

Correct Answer: C

Solution:

$ \frac{Simpleinterest}{Principal}=\frac{1}{9} $ If the annual rate of interest is r%, then $ Rate=\frac{SI\times 100}{Principal\times Time} $

$ \Rightarrow $ $ r=\frac{1}{9}\times \frac{100}{r} $ $ [\because t=r] $

$ \Rightarrow $ $ r^{2}=\frac{100}{9} $
$ \Rightarrow $ $ r=\sqrt{\frac{100}{9}}=\frac{10}{3}=3\frac{1}{3} $ %

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Quantitative Aptitude Ques 1806

Question: The simple interest on a sum of money is $ \frac{1}{9} $ of the principal and the number of years is equal to rate per cent per annum. The rate per annum is

Options:

Answer:

Solution:

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