Logical ReasoningDifficulty: Hard

PT148 S1 Q22 Explanation

Most of the new cars that Regis

A free, expert breakdown of this official LSAT Logical Reasoning question.

TopicsMust be True

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Stimulus

Most of the new cars that Regis Motors sold last year were purchased by residents of Blomenville. Regis Motors sold more new cars last year than it did in any previous year. Still, most new year were not purchased from Regis Motors.

What this question is testing

Must be True

Your task

Break the argument into its conclusion and evidence, then do exactly what the question stem asks with that structure.

Common trap

Answers that sound relevant to the topic but don't connect to the argument's actual reasoning.

Winning move

Predict what a right answer must do, then test each choice against the conclusion-evidence gap.

Reading along? Open the full official question in LawHub — we show a fragment here and keep the reasoning in our own words.

The question
22.

If the statements above are true, which one of the following must

Answer choices

  1. Out of Scope7% picked this

    Regis Motors sold more new cars to residents of Blomenville last year than they had

    Out of Scope: record # of new to Blomenville's We know that Regis sold a record number of new cars last year, but we don't know that Regis sold a record number of new cars to Blomenville residents last year. They may have achieved their record by selling the same / fewer new cars to Blomenville's residents and selling way more new cars to nonresidents of Blomenville.

  2. Out of Scope5% picked this

    The total number of new cars purchased by residents of Blomenville was greater last year than it was

    Out of Scope: record # bought by Blomenville's We know that Regis sold a record number of new cars last year, but we don't know that residents of Blomenville bought a record number of new cars last year. The "most" fact we get in the final sentence doesn't combine with anything else to derive that residents of Blomenville set an all time record for how many new cars they bought, because we have no way to judge whether their car-buying behavior from other dealerships is higher/lower than in years past.

  3. Out of Scope19% picked this

    A car retailer other than Regis Motors sold the most new cars to residents of

    Out of Scope: other than Regis Motors We don't know about any other dealers besides Regis Motors, so it would be hard to prove a must be true about any of them. Given the last sentence, we know that there were lots of new cars bought by residents of Blomenville that came from retailers other than Regis Motors, but we wouldn't be able to say that any one retailer outsold Regis Motors. Maybe Regis Motors sold residents of Blomenville 20,000 new cars last year, while three other dealerships each sold B's residents 10,000 new cars last year. Of the 50,000 new cars bought by Blomenville's residents, most of them were not purchased from Regis, even though "no car retailer other than Regis Motors sold the most new cars to Blomenville's residents". We just showed how even given the facts in the stimulus, this answer choice could be false.

  4. Correct67% picked this

    The number of new cars purchased last year by residents of Blomenville is greater than the number of new

    Why this is right

    As we detailed (painfully) in the write-up of the paragraph, this is the thing we can infer when we have Most A's are B Most B's are ~A ------------------- infer: more B's than A's Most [sold by Regis Motors] are [bought by Blomenville's], but Most [bought by Blomenville's] are [not sold by Regis Motors] infer: [bought by Blomenville's] > [sold by Regis Motors] Let's say Regis sold 100 new cars last year. At least 51 of them went to residents of Blomenville. So if 51 new cars purchased by Blomenville residents were purchased from Regis, but "most new cars purchased by Blomenville residents were not purchased from Regis Motors", then there must have been at least 52 new cars bought by Blomenville's residents that didn't come from Regis Motors. That means that there would be a minimum of 103 new cars bought by Blomenville's residents.

    Skill tested: Must be True · how this choice captures the argument's function is the move to repeat next time.

  5. Out of Scope: market share4% picked this

    Regis Motors' share of the new car market in Blomenville last year increased over its

    We could only speculate about market share, since we haven't received any data relating to that.

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