Free GMAT Practice Question

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ID: GMAT-VR-CR-017
Section: Verbal Reasoning - Critical Reasoning (CR)
Topic: Resolve the Paradox
Difficulty level: Hard

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Two years ago Rensfeld replaced its twice-weekly kerbside collection of household waste with a once-weekly collection, expecting the change to alter when residents put waste out but not how much there was. Yet the municipality's records show the weight it collected last year was 15 percent below the year before the change, though the number of households rose over that period and no new recycling service was introduced.

Which of the following, if true, best explains the drop the records show?

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