SSC IMD SA Mock 03 – Question 49

Question:

A certain sum, when invested for 3 years at 10% per annum compound interest, compounded annually, amounts to Rs. 53,240. Find the sum invested (in Rs.).

एक निश्चित राशि, जब 3 वर्ष के लिए 10% वार्षिक चक्रवृद्धि ब्याज (वार्षिक रूप से संयोजित) पर निवेश की जाती है, तो ₹53,240 हो जाती है। निवेश की गई राशि (₹ में) ज्ञात कीजिए।

Options:

  • Rs. 40,000
  • Rs. 41,000
  • Rs. 42,000
  • Rs. 43,000
  • ₹40,000
  • ₹41,000
  • ₹42,000
  • ₹43,000

Correct Answer: a)

Explanation:

Amount \(A = P\left(1 + \dfrac{r}{100}\right)^n \implies 53240 = P(1.10)^3 = 1.331 P\).
\(P = \dfrac{53240}{1.331} = \text{Rs. } 40,000\).

मिश्रधन \(A = P(1 + 0.10)^3 = 1.331 P\)।
\(P = \dfrac{53240}{1.331} = ₹40,000\)।

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