Multiple choice

The compound interest on Rs. 12000 for 9 months at 20% per annum, interest being compounded quarterly, is- 12000 रू. पर 20% प्रति वर्ष की दर से त्रैमासिक संयोजित होने वाला 9 महीनों का चक्रवृद्धि ब्याज होगा-

  1. Rs. 1891.50

  2. Rs. 1901.50

  3. Rs. 1791.50

  4. Rs. 1918.50
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A Correct answer
Explanation

For quarterly compounding, rate per quarter = 20%/4 = 5% and time = 9 months = 3 quarters. Amount = 12000 × (1 + 5/100)³ = 12000 × 1.157625 = Rs. 13891.50. Compound Interest = Amount - Principal = 13891.50 - 12000 = Rs. 1891.50. Option B (Rs. 1901.50) is incorrect as it doesn't follow the formula.

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