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Railways PYQCBT 1 2016

RRB NTPC · Question 46

The sum of three numbers is 245. If the ratio of the first and second numbers is 2 : 3 and the ratio of the second and third numbers is 5 : 8, then find the second number: A. 50 B. 75 C. 90 D. 420

  1. C

  2. A

  3. B

  4. D

Show answer & explanation

Answer: (C) B

Explanation

First : second = 2 : 3 = 10 : 15 and second : third = 5 : 8 = 15 : 24. So the ratio is 10 : 15 : 24 (49 parts). 245/49 = 5, so the second number = 15 × 5 = 75.