The simple interest on a sum of money is 1/9 of the principal and the number of years is equal to the rate percent per annum. The rate percent per annum is:किसी धनराशि पर साधारण ब्याज मूलधन का 1/9 है तथा वर्षों की संख्या प्रति वर्ष ब्याज दर प्रतिशत के बराबर है। प्रति वर्ष ब्याज दर प्रतिशत है:

1. A3%
2. B0.33%
3. C3.33%
4. D2.33%

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Correct answer: C. 3.33%

Explanation

Let rate = R% and time = R years. SI = P × R × R / 100 = P/9, so R² = 100/9 and R = 10/3 = 3.33% per annum.माना दर = R% और समय = R वर्ष। साधारण ब्याज = P × R × R / 100 = P/9, अतः R² = 100/9 और R = 10/3 = 3.33% प्रति वर्ष।