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Railways PYQCBT 2 2017

RRB NTPC · Question 15

The LCM of two numbers is 48. The numbers are in the ratio \(1 : \dfrac{2}{3}.\) The sum of the numbers is _____.

  1. 60

  2. 40

  3. 20

  4. 45

Show answer & explanation

Answer: (B) 40

Explanation

The ratio 1 : 2/3 = 3 : 2, so the numbers are 3k and 2k with LCM 6k = 48. Hence k = 8, the numbers are 24 and 16, and their sum is 40.