The price of a full-fare coach

Answer choices

1. A

   Out of Scope: Service1% picked this

   A Toronto-to-Dallas full-fare coach ticket on Breezeway Airlines provides ticket-holders with a lower level of service today than such a

   We don't care about any qualitative comparison of now vs. last year. We're just here to try to prove a mathematical claim about dollars and cents.

   1%
2. B

   Correct64% picked this

   A Toronto-to-Dallas discount coach ticket on Breezeway Airlines costs about the same amount in constant dollars today as

   Why this is right

   If full-fare costs the same (as we were told) and discount costs the same (as this answer is telling us), and this year people are buying more discount than full-fare, then it's mathematically certain that the average ticket price is lower this year. Note: we are, correctly, adding our own dictionary-based assumption that "a discount ticket costs less than a full-fare ticket"

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

   64%
3. C

   Unrelated to Goal18% picked this

   All full-fare coach tickets on Breezeway Airlines cost the same in constant dollars as they

   We already knew that full-fare coach price was unchanged when it came to the Toronto to Dallas flight, and the conclusion is only about the price of the Toronto to Dallas flight. This answer is only providing information about the cost of other flights, which are totally out of scope.

   18%
4. D

   Unrelated to Goal11% picked this

   The average number of coach passengers per flight that Breezeway Airlines carries from Toronto to Dallas today is higher than the average

   We don't care about the number of passengers per flight. That could be mathematically relevant if we were interested in the revenue or profit per flight that Breezeway Airlines was making, but this conclusion only cares about the price per ticket that passengers are paying. They paid what they paid, regardless of how many people are on the flight. The only mathematical variable we care about is the price of a discount coach T->D ticket this year vs. last year.

   11%
5. E

   Unrelated to Goal5% picked this

   The criteria that Breezeway Airlines uses for permitting passengers to buy discount coach tickets on the Toronto-to-Dallas route are different today than

   We're trying to prove a mathematical claim about dollars and cents, and this is talking about a non-mathematical idea: criteria for who gets to buy a discount ticket If it ain't a fact about the price of a discount coach ticket from T to D, we ain't interested. Because that math fact is the only thing left that affects whether the conclusion is true or false.

   5%