Multiple choice

At what percent per annum will Rs 3000 amount to Rs. 3993 in 3 years if the interest is compounded annually? किस वार्षिक प्रतिशत ब्याज की दर से 3000 रूपए का मिश्रधन 3 वर्षों में 3993 रूपए हो जाएगा, यदि चक्रवृद्धि ब्याज वार्षिक संयोजित किया जाता है?

  1. 5%

  2. 10%

  3. 7%

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

Using A = P(1 + r/100)³: 3993 = 3000(1 + r/100)³, so (1 + r/100)³ = 1.331. Taking cube root: 1 + r/100 = 1.1, thus r = 10%. Verify: 3000 × 1.1³ = 3000 × 1.331 = 3993. Option B is correct.

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