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Question : The sum for 2 years gives a compound interest of Rs. 3225 at the rate of 15% per annum. The sum is:

Option 1: Rs. 10000

Option 2: Rs. 20000

Option 3: Rs. 15000

Option 4: Rs. 32250


Team Careers360 2nd Jan, 2024
Answer (1)
Team Careers360 11th Jan, 2024

Correct Answer: Rs. 10000


Solution : Given: The sum for 2 years gives a Compound interest of Rs. 3225 at the rate of 15% per annum.
Let the sum be p.
Now applying the compound interest formula we get,
$p[(1+\frac{15}{100})^2–1]=3225$
⇒ $p[(\frac{23}{20})^2–1]=3225$
⇒ $p[(\frac{529}{400})–1]=3225$
⇒ $p(\frac{129}{400})=3225$
⇒ $p=3225×\frac{400}{129}=10000$
Hence, the correct answer is Rs. 10000.

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