CAT 2017 Slot 1 QA Q13 Equations

Question 13 of the Quantitative Ability (QA) section, CAT 2017 Slot 1, with CAT's official answer.

If a and b are integers of opposite signs such that (a + 3)2 : b2 = 9 : 1 and (a - 1)2 : (b - 1)2 = 4 : 1, then the ratio a2 : b2 is:
  1. A
    9 : 4
  2. B
    81 : 4
  3. C
    1 : 4
  4. D
    25 : 4

Answer: (D) 25 : 4 Equations MCQ

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