Quantitative Aptitude Ques 1467
Question: Ratio of the principal and the amount after 1 yr is 10: 12. Then, the rate of interest per annum is
[SSG (FCI) 2012]
Options:
A) 12%
B) 16%
C) 18%
D) 20%
Show Answer
Answer:
Correct Answer: D
Solution:
- Given, $ \frac{Principal}{Amount}=\frac{10}{12} $ $ \frac{Amount}{Principal}=\frac{Principal+SI}{Principal}=\frac{12}{10}-1=\frac{2}{10} $
$ \Rightarrow $ $ 1+\frac{SI}{Principal}=\frac{12}{10} $
$ \Rightarrow $ $ \frac{SI}{Principal}=\frac{12}{10}-1=\frac{2}{10} $
$ Rate=\frac{SI\times 100}{P\times T} $
$ \therefore $ $ Rate=\frac{1}{5}\times 100=20 $ %
BETA
