SATHEE: Quantitative Aptitude Ques 2040

Quantitative Aptitude Ques 2040

Question: The compound interest on a certain sum of money for 2 yr at 5% is Rs. 328, then the sum is

Options:

A) Rs. 3000

B) Rs.3600

C) Rs. 3200

D) Rs.3400

Show Answer

Answer:

Correct Answer: C

Solution:

Suppose, amount of sum =Rs. x Then, first year interest at $ 5%=\frac{x\times 1\times 5}{100}=Rs\text{. }\frac{x}{20} $ $ \because $ Interest is compound annually.

$ \therefore $ Sum of amount after one year $ =x+\frac{x}{20}=Rs\text{. }\frac{21x}{20} $

$ \therefore $ Second year interest at $ 5%=\frac{\frac{21x}{20}\times 1\times 5}{100}=Rs\text{. }\frac{21x}{400} $

$ \therefore $ Sum of amount after two years $ =\frac{x}{20}+\frac{21x}{400} $ $ =\frac{20x+21x}{400}=Rs\text{. }\frac{41x}{400} $ According to the question, $ \frac{41x}{400}=328 $

$ \Rightarrow $ $ x=\frac{328\times 400}{41} $
$ \Rightarrow $ $ x=Rs\text{. 3200} $

Quantitative Aptitude Ques 2039

Quantitative Aptitude Ques 2041

Quantitative Aptitude Ques 2040

Question: The compound interest on a certain sum of money for 2 yr at 5% is Rs. 328, then the sum is

Options:

Answer:

Solution:

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