Railways PYQCBT 2 2017

RRB NTPC · Question 116

You are given a question followed by two statements numbered I and II. You have to decide whether the data provided on the statements are sufficient to answer the question. What is the value of 'x'? Statements : I. x + 2y = 6 II. 3x + 6y = 18

  1. Statement I alone is sufficient

  2. Both statements I and II together are not sufficient

  3. Both statements I and II together are necessary

  4. Statement II alone is sufficient

Show answer & explanation

Answer: (B) Both statements I and II together are not sufficient

Explanation

Statement II is just Statement I multiplied by 3, so together they give only one equation in two unknowns. x cannot be found even with both.