NextMockSearch exams, e.g. SSC CGL, UPPSC, Lekhpal
Railways PYQCBT 1 2016

RRB NTPC · Question 87

Calculate the principal if a sum of money becomes Rs.1200 in 4 years and Rs.1500 in 7 years at simple interest. A. Rs.800 B. Rs.600 C. Rs.900 D. Rs.200

  1. C

  2. D

  3. A

  4. B

Show answer & explanation

Answer: (C) A

Explanation

The interest for 3 years (years 5–7) is 1500 − 1200 = Rs 300, i.e. Rs 100 a year. For 4 years it is Rs 400, so the principal is 1200 − 400 = Rs 800.