SSC CHSL Premium Mock 07 – Q061

Question:

In how many years will the simple interest on a sum of money be equal to the principal at the rate of \(2 \dfrac{6}{7}\%\) per annum?

\(2 \dfrac{6}{7}\%\) प्रति वर्ष की दर से कितने वर्षों में किसी धनराशि पर साधारण ब्याज मूलधन के बराबर हो जाएगा?

Options:

  • 35 years
  • 34 years
  • 33 years
  • 37 years
  • 35 वर्ष
  • 34 वर्ष
  • 33 वर्ष
  • 37 वर्ष

Correct Answer: a)

Explanation:

Let principal be \(P\). Then \(SI = P\).

Rate \(R = 2 \dfrac{6}{7}\% = \dfrac{20}{7}\%\).

Formula: \(SI = \dfrac{P \times R \times T}{100}\)

\[P = \dfrac{P \times \frac{20}{7} \times T}{100} \implies 1 = \dfrac{20 T}{700} \implies T = \dfrac{700}{20} = 35\text{ years}\]

Hence, option (a) is correct.

माना मूलधन \(P\) है, अतः \(SI = P\)।

दर \(R = 2 \dfrac{6}{7}\% = \dfrac{20}{7}\%\)।

\[P = \dfrac{P \times \frac{20}{7} \times T}{100} \implies T = \dfrac{700}{20} = 35\text{ वर्ष}\]

अतः विकल्प (a) सही उत्तर है।

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