Multiple choice

The simple interest of a certain sum of money is 240% of principle in 16 years at the certain rate .find the rate of interesrt. किसी मूलधन पर साधारण ब्याज 16 वर्षों में निश्चित व्याज दर पर मूलधन का 240% है |ब्याज दर ज्ञात कीजिए |

  1. 10%

  2. 12%

  3. 15%

  4. 20%
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C Correct answer
Explanation

Simple interest = (P×R×T)/100. Given SI = 240% of P = 12P/5. So 12P/5 = (P×R×16)/100. Solving: 12/5 = 16R/100, which gives 12/5 = 4R/25, so R = (12×25)/(5×4) = 15%.

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