Q18

 
rossobryan24
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Vinny Gambini
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15 Real Recent LSATs PrepTest 54 June 2008 Section 3 #18

by rossobryan24 Sun Sep 30, 2012 7:49 pm

Hi,

I am confused on number 18 in section 3 of the June 2008 PrepTest 54. The answer key says the answer is B but I am confused as why that is correct. I chose answer C and believe that C is correct and not B.

I am not sure if you need me to right out the question or not, but if you could help me understand the reasoning behind this answer that would be great. Thanks!

Ross
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tommywallach
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Atticus Finch
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Re: Q18

by tommywallach Tue Oct 02, 2012 2:06 pm

Hey Rosso,

This is an orientation question (typically the first question, in which they ask which of a series of answers could represent a viable ordering/grouping), so actually we don't need to make use of a diagram. Instead, we'll look at each constraint, and use it to knock out answer choices!

Constraint #1: The accepted bid is either K or R and is either the second or the third lowest in cost.

Inference: Either K or R needs to be represented in the slot 2 or slot 3 of a correct answer choice.

Eliminates: C (HSTKRJ - doesn't have K or R in the right place)

Constraint #2: H is lower in cost than each of J and K

Eliminates: A (TKHSJR - K is lower than H)

Constraint #3: If J is the fourth lowest in cost, then J is lower in cost than each of S and T.

Eliminates: D (HKSJRT - J is fourth, but J is not lower in cost than S)

Constraint #4: If J is not the fourth lowest in cost, then J is higher in cost than each of S and T

Eliminates: E (HJKRST - H is not fourth, but it is not higher in cost than S or T).

We've actually eliminated all the wrong answers now, but the fifth constraint (Either R or S is the fifth lowest in cost) conflicts with A (TKHSJR).

The answer is B.

Does that process make sense? Let me know!

-t
Tommy Wallach
Manhattan LSAT Instructor
twallach@manhattanprep.com
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