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Exam GMAT Section 2 Quantitative All Questions

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Exam GMAT Section 2 Quantitative topic 2 question 16 discussion

Actual exam question from Test Prep's GMAT Section 2 Quantitative
Question #: 16
Topic #: 2
[All GMAT Section 2 Quantitative Questions]

If AB = 40, what is the value of AB(A + 2B)?
(1) A B = -18.
(2) A2B = 80.

  • A. Statement (1) BY ITSELF is sufficient to answer the question, but statement (2) by itself is not.
  • B. Statement (2) BY ITSELF is sufficient to answer the question, but statement (1) by itself is not.
  • C. Statements (1) and (2) TAKEN TOGETHER are sufficient to answer the question, even though NEITHER statement BY ITSELF is sufficient.
  • D. Either statement BY ITSELF is sufficient to answer the question.
  • E. Statements (1) and (2) TAKEN TOGETHER are NOT sufficient to answer the question, requiring more data pertaining to the problem.
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Suggested Answer: B 🗳️
Statement (1) alone is insufficient since we need the value of A + 2B.
Statement (2) is sufficient. A2B = A(AB) = A(40) = 80 A=2 and B=20.
Now, we know that A + 2B = 42 and we can calculate the required expression.
The correct answer is B.
by [deleted] at March 9, 2025, 5:04 p.m.

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