LG Game 4 Question 21 Explanation, by LSATHacks
This question asks which two employees can share a workpiece during the whole week. Basically, they’ll have to pass it back and forth, without giving it to anyone else.
First, you can eliminate D and E. M can only pass to J (we saw this on question 20).
Next, you can eliminate A and B. Both K and L can’t pass to J. So it’s impossible for J and K/L to pass a workpiece back and force without involving a third employee.
Therefore, C is CORRECT. K and L have no restrictions about passing a workpiece between the two of them.
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I am confused on this game. I understand that M is the only employee that can transfer to J. But for number 21, if only two employees are sharing a work piece, then why can’t it be shared among K and M or L and M (because there’s no J to begin with)?
If K and M were to pass a piece back and forth, this would mean that J and L could only pass between each other all week. L cannot pass to J, so this is impossible. It would be the same for L and M – if they are passing a piece back and forth, J and K would have to pass between each other all week. K cannot pass to J, so this is also impossible. Hope that helps!
It sort of helps, except based on that logic, I don’t see how all five choices are not eliminated. If the correct answer is C, then it means K and L pass a piece back and forth, leaving J and M to pass a piece back and forth, which is prohibited by rule 1.
Never mind, I figured it out :) K and L can’t be empty-handed while the other is working on the shared piece so there must be other exchanges taking place.
Hi Graeme,
For question 21 I got it correct, but only by elimination of the other answers. I am still confused as to how this would be appropriate. If K and L are passing back and forth all week, that leaves J and M passing back and forth all week and J can’t pass to M.
You said that only m can pass to j. But I don’t see why k and m or l and m can’t pass back and forth.
Thank you for all of your great help.
It’s because L and K can’t pass to J. So only M can. And because someone has to pass to J, it must be M, every time.