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  9. Q293

RRB NTPC 2025 · Question 293 of 409

At what rate of interest (in percentage) per year will a sum of money double itself in 5 years on simple interest?

  1. A20%
  2. B22%Correct
  3. C40%
  4. D18%

Answer: B. 22%

Official answer key verified. Detailed explanation coming soon.

Source: RRB NTPC Graduate CBT-1 response sheet 05-Jun-2025 Shift-3 (candidate-shared copy of official answer-key viewing) · official-answer-key

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