CAT 2021 Slot 2 QA Q16 Inequalities & Modulus

Question 16 of the Quantitative Ability (QA) section, CAT 2021 Slot 2, with CAT's official answer.

For all real numbers x the condition |3x - 20| + |3x - 40| = 20 necessarily holds if
  1. A
    6 < x < 11
  2. B
    7 < x < 12
  3. C
    10 < x < 15
  4. D
    9 < x < 14

Answer: (B) 7 < x < 12 Inequalities & Modulus MCQ

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Same concept in other years

See every question on Sums of |x − a|: distance on the number line.

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