Multiple choice

Find the compound interest on Rs.51200 for 9 months at 15% per annum compounded quarterly. 51200 रूपये पर 15% प्रतिवर्ष पर 9 महीनों के लिए चक्रवृद्धि ब्याज ज्ञात कीजिये यदि ब्याज दर तिमाही देय हो।

  1. Rs.5978.7

  2. Rs.5987.7

  3. Rs.5897.7

  4. Rs.5789.7

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A Correct answer
Explanation

Principal = 51200, rate = 15% p.a., time = 9 months = 3 quarters. Quarterly rate = 15/4 = 3.75%. Amount = 51200(1 + 3.75/100)^3 = 51200(1.0375)^3 ≈ 57378.7. Compound Interest = 57378.7 - 51200 = 5978.7.