Quantitative Aptitude Ques 2185
Question: A certain scheme of investment in simple interest declares that it triples the investment in 8 yr. If you want to quadruple your money through that scheme, then you have to invest it for [NICL (AO) 2015]
Options:
A) 10 yr
B) 10 yr 8 months
C) 11 yr 6 months
D) 12 yr
E) None of the above
Show Answer
Answer:
Correct Answer: D
Solution:
- Let the principal be Rs. x.
Then, amount = 3x
Then, interest $ =3x-x=Rs.,2x $
Rate of interest $ =\frac{2x\times 100}{x\times 8}=25% $
New amount = 4x, Interest $ =4x-x=3x $
$ Time=\frac{3x\times 100}{25\times x}=12,yr $