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  9. Q48

CGPSC 2012 · Question 48 of 66

Q54. A sum of money doubles itself at annual rate of compound interest in 6 years. In how many years will it become 16 times at the same rate of compound interest?

Basic Numeracy

  1. A48 years
  2. B36 years
  3. C24 yearsCorrect
  4. D20 years
  5. ENone of these

Answer: C. 24 years

Explanation

16 = 2^4, so it takes 4 doublings: 4 x 6 = 24 years.

Source: CGPSC Prelims 2012 GS Paper-II (held 9-6-2013), solved paper

← Q47View full paper (66 questions)Q49 →

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