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  9. Q130

TNPSC Group-I 2021 · Question 130 of 148

Find the rate of interest if the difference between C.I. and S.I. on Rs. 8,000 compounded annually for 2 years is Rs. 20.

Aptitude - Interest

  1. A5%Correct
  2. B10%
  3. C15%
  4. D20%

Answer: A. 5%

Explanation

8000 x (r/100)^2 = 20 gives r = 5%.

Source: TNPSC Group-I Prelims (held 3 Jan 2021) - official paper via examrace.com

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