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While the total enrollment of public elementary and secondary schools

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Re: While the total enrollment of public elementary and secondary schools [#permalink] New post   27 Jan 2023, 21:43
GMATNinja MartyTargetTestPrep DmitryFarber

The passage tells us that students have increased by 1% and teachers by 3%, this year. How can we assume that the current ratio doesn't already constitute 10% more teachers per pupil? In other words, why do we need to assume that there are more students than teachers this academic year?
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Re: While the total enrollment of public elementary and secondary schools [#permalink] New post   28 Jan 2023, 11:29
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achloes

Answer choice C tells us that the teacher/student ratio needs to be 10% more than last year, not that we need 10% more teachers than students. From the information given, we can calculate the change from last year, even though we don't know anything about the actual numbers. If last year, the teacher/student ratio was t/s, this year it is 1.03t/1.01s. That's only about a 2% increase, so no matter what the numbers are, they haven't hit a 10% increase in the ratio, so they will need more teachers.
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Re: While the total enrollment of public elementary and secondary schools [#permalink] New post   06 Feb 2024, 19:08
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Re: While the total enrollment of public elementary and secondary schools [#permalink]
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