# If Yoshida's speech is at 1 P.M., which one of the following could be true?

Ryan on May 6, 2019

This is impossible, or i've missed something?

In a time + grouping game of two groups neither x nor y can be before z, question 12 asks if Y speaks at the first time what can happen? if Y speaks first, there is only one other person who can speak at the same time, thus either Y AND x will be before Z or at least X HAS to be if Z is the other first (one pm) speaker. So the game requires you to break a rule? What have i missed? Sent from my iPad

Replies

Ravi on May 7, 2019

@Deke,

Happy to help.

The question says, "If Yoshidaâ€™s speech is at 1 P.M., which one of the
following could be true?"

We have

G _ _ ...
R _ _ ...

We know Y is in 1, but we don't know if it's in G or R. Because of
rule 2, we know that neither X's speech nor Y's speech can be before
Z's speech. This means that Z has to go in the other 1 spot (whichever
one that Y isn't in) to make sure that it's not after X and/or Y.

G Y _ ...
R Z _ ... or

G Z _ ...
R Y _ ...

Now let's take a look at the answer choices.

(A) says, "Longâ€™s speech is at 1 P.M. in the Gold Room."

We know (A) can't be true because Y and Z occupy the 1 spots on the
board, so (A) is out.

(B) says, "Longâ€™s speech is at 2 P.M. in the Rose Room."

(B) can't be true because Y and Z are in the 1 spots and rule 1 tells
us that M has to go before L in the same room, so (B) can't happen.
It's out.

(C) says, "Molinaâ€™s speech is at 2 P.M. in the Gold Room."

(C) is totally possible.

G Y M L
R Z X

The above board satisfies all of the rules, showing that (C) is
something that could be true, so it's the correct answer.

(D) says, "Xiaoâ€™s speech is at 3 P.M. in the Gold Room."

(D) is out because either M or L would have to be at 2 p.m. in the
Gold Room, but then M and L wouldn't be together, violates rule 1.

(E) says, "Xiaoâ€™s speech is at 1 P.M. in the Rose Room."

We know (E) can't be true because Y and Z occupy the 1 spots on the
board, so (E) is out.

Does this make sense? Let us know if you have any other questions!

Ryan on May 8, 2019

Ugh, yep, stupid me...

Ravi on May 9, 2019

@Deke, not at all! It can be easy to forget about rules when there are so many of them. Keep up the hard work, and don't sweat this one!