Official Guide Explanation:
Data Sufficiency #31




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Solution and Metadata

Question: 31
Page: 275
Difficulty: 5 (Moderate)
Category 1: Arithmetic > Decimals >
Category 2: Arithmetic > Properties of Integers > Other

Explanation: Statement (1) is insufficient. If 0.43t7 is rounded up to 0.44, t must be 5 or greater. That limits the options, but it doesn't give us a specific value for t.

Statement (2) is sufficient. Since the digit in the ten - thousanths place is 7, t is rounded up with the number is rounded to the nearest thousandth. So, t = 5, because 0.4357 rounds up to 0.436, while 0.4367 rounds up to 0.437. Choice (B) is correct.

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