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## Official Guide Explanation:

Data Sufficiency #72

**Background**

This is just one of hundreds of free explanations I've created to the quantitative questions in The Official Guide for GMAT Review (12th ed.). Click the links on the question number, difficulty level, and categories to find explanations for other problems.

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**Solution and Metadata**

**Question****: 72**

Page: 279

Difficulty: **5** (Moderate)

Category 1: Algebra > Linear Equations-Two Unk >

Category 2: Algebra > Inequalities > other

**Explanation:** Statement (1) is sufficient: the equation says that x is 2 greater than y. That means that x is greater than y: x > y. Statement (2) is not sufficient: multiply both sides by 2, and the result is x = 2y - 2. If y = 1, then x = 0 and x is not greater than y. If y = 3, x = 4 and x is greater than y. Because there are two possible answers, the statement is not sufficient, and choice (A) is correct.

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