Multiple choice

The amount after third year at S.I. is Rs.855 and after 8 years is Rs.1080. Find the rate of simple interest . साधारण ब्याज की दर से तीन वर्षो के बाद मिश्रधन 855 रू. है तथा 8 वर्ष बाद के बाद रू.1080 है । साधारण ब्याज की दर ज्ञात कीजिये ।

  1. 12.5%

  2. 5%

  3. 10.5%

  4. 6.25%
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Simple interest for 5 years (from year 3 to year 8) = 1080 - 855 = 225. Interest per year = 225/5 = 45. For 3 years, interest = 45 × 3 = 135. Principal = 855 - 135 = 720. Rate = (45/720) × 100 = 6.25%.

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