Multiple choice

The compound interest on a certain sum at 2.5% p.a. for 2 years is Rs. 81. Find the sum. एक निश्चित धनराशि पर 2 वर्षों में 2.5.% वार्षिक की दर से चक्रवृद्धि ब्याज 81 रू. है। धनराशि ज्ञात कीजिए।

  1. Rs. 1000

  2. Rs. 1200

  3. Rs. 1500

  4. Rs. 1600
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D Correct answer
Explanation

Let sum be P. CI for 2 years at 2.5% = P[(1 + 2.5/100)² - 1] = P[(1.025)² - 1] = P(1.050625 - 1) = 0.050625P = 81. So P = 81/0.050625 = 1600.

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