Multiple choice

The difference between compound interest and simple interest on a sum of Rs. 16000 at 5% per annum for 3 years is- 16000 रू. की धनराशि पर 5% वार्षिक ब्याज की दर से 3 वर्षों में साधारण ब्याज और चक्रवृद्धि ब्याज में अन्तर है-

  1. Rs. 112

  2. Rs. 118

  3. Rs. 132

  4. Rs. 122
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Simple Interest = P×R×T/100 = 16000×5×3/100 = Rs. 2400. For Compound Interest, Amount = P(1+R/100)^T = 16000(1+5/100)³ = 16000×1.157625 = Rs. 18522, so CI = Rs. 2522. The difference = 2522 - 2400 = Rs. 122. Alternatively use direct formula: Difference for 3 years = PR²(300+R)/100³ = 16000×25×305/1000000 = Rs. 122.

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