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Railways PYQCBT 1 2016

RRB NTPC · Question 35

A sum of money becomes 3 times itself in 5 years. In how many years will this amount become 5 times of itself at the same interest rate? A. 5 years B. 10 years C. 9 years D. 8 years

  1. A

  2. C

  3. B

  4. D

Show answer & explanation

Answer: (C) B

Explanation

Becoming 3 times means the interest is 2P in 5 years. To become 5 times needs interest 4P, which takes 10 years at the same simple interest rate.