CAT 2019 Slot 2 QA Q25 Equations

Question 25 of the Quantitative Ability (QA) section, CAT 2019 Slot 2, with CAT's official answer.

The quadratic equation x2 + bx + c = 0 has two roots 4a and 3a, where a is an integer. Which of the following is a possible value of b2 + c?
  1. A
    3721
  2. B
    549
  3. C
    361
  4. D
    427

Answer: (B) 549 Equations MCQ

A worked solution for this question is being written. Meanwhile, practise it in a timed mock and see how other aspirants did.