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Railways PYQCBT 1 2016

RRB NTPC · Question 14

What is the ratio of simple interest earned on certain amount at the rate of 12% p.a. for 9 years and that for 12 years?

  1. 1 : 2

  2. 2 : 3

  3. 3 : 4

  4. 4 : 5

Show answer & explanation

Answer: (C) 3 : 4

Explanation

Simple interest = P × R × T/100. With the same principal and rate, SI is proportional to time, so the ratio = 9 : 12 = 3 : 4.