Multiple choice

The difference between the compound interest and the simple interest on a certain sum at 18% per annum for 3 years is Rs. 489.402 the sum is - किसी धनराशि पर 18% वार्षिक दर पर 3 वर्षों के चक्रवृद्धि ब्याज और साधारण ब्याज का अंतर 489.402 रूपये है तो वह धनराशि कितनी है?

  1. Rs.4750

  2. Rs.4950

  3. Rs.4350

  4. Rs.5350
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A Correct answer
Explanation

CI - SI for 3 years at 18% = P[(1 + 18/100)³ - 1] - P × 18 × 3/100 = P[1.18³ - 1 - 0.54] = P[0.643 - 0.54] = 0.103P = 489.402. Therefore P = 4750.

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