Official Guide Explanation:
Data Sufficiency #146

Background

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Solution and Metadata

Question: 146
Page: 286
Difficulty: 5 (Moderate)
Category 1: Algebra > Inequalities > other
Category 2: Word Problems > Rate Problems > other

Explanation: 120 words per paragraph for 25 paragraphs is a total of 120(25) = 3,000 words. The non - preface part of the report is 2,600 words long, so the question is asking whether the number of words in the preface is less than 400.

Statement (1) is insufficient: if the preface has more than 200 words, it could be less than 400, but could also be greater. Statement (2) is sufficient: if the preface has less than 300 words, it must have less than 400. The correct choice is (B).

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