June 2015 LSAT Section 4 Question 12

Which one of the following is an acceptable schedule for the librarians, listed in order from Monday through Saturday?

Nicholas-Groblewski on May 31, 2020

Question Set Up

How do you assume that K cannot be on Saturday? I do not see that in a rule or inference that it cannot be placed on that day.

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SamA on June 1, 2020

Hello @Nicholas-Groblewski,

This inference comes from the 4th rule: Kitson must be on desk duty earlier in the week than Zahn.

If K were placed on Saturday, then there is no later day for Zahn to be placed. This is why K cannot be on saturday.