Multiple choice

What is the compound interest on Rs. 20000 for 3 years if the rate of interest is 5% for the first year, 10% for the second year and 15% for the third year? रू. 20000 पर 3 वर्षों के लिए चक्रवृद्धि ब्याज क्या होगा यदि प्रथम वर्ष ब्याज की दर 5% दूसरे वर्ष ब्याज की दर 10% तथा तृतीय वर्ष 15% है?

  1. Rs. 6565

  2. Rs. 5656

  3. Rs. 6655

  4. Rs. 6554

  5. None of these इनमें से कोई नहीं

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A Correct answer
Explanation

Principal = Rs. 20000. Year 1 at 5%: 20000 × 1.05 = Rs. 21000. Year 2 at 10%: 21000 × 1.10 = Rs. 23100. Year 3 at 15%: 23100 × 1.15 = Rs. 26565. Compound Interest = Final Amount - Principal = 26565 - 20000 = Rs. 6565. Therefore, the compound interest is Rs. 6565.