Multiple choice

On a certain principal if simple interest for two years is Rs.10000 and compound interest is Rs.10625. What is the rate of interest ? यदि किसी निश्चित मूलधन पर दो वर्षों का साधारण ब्याज 10000 रू. और चक्रवृद्धि ब्याज 10625 रू. है तो ब्याज की दर क्या है ?

  1. 20%

  2. 15%

  3. 10%

  4. 12.5%
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The difference between compound interest and simple interest for 2 years is the interest on the first year's simple interest. Simple interest for 2 years = 10000, so for 1 year = 5000. Difference = CI - SI = 10625 - 10000 = 625, which is interest on 5000 for 1 year. Rate = (625/5000) × 100 = 12.5%.

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