Answer: RITA

To determine this, look at who is higher ranked in each column of the preference schedule (and by how many voters).


# of




130 120 100 150
1st P T T S
2nd R R R R
3rd S S P P
4th T P S T

Only the 150 voters in the fourth column prefer Sarah to Rita and the other 350 voters (130+120+100) prefer Rita to Sarah. So, Rita beats Sarah in a head-to-head matchup. Since Rita won, we put her name in the appropriate cell of the head-to-head matchup table.

  Paul Rita Sarah Tim
Paul ---------- RITA SARAH PAUL
Rita ---------- ---------- RITA  
Sarah ---------- ---------- ----------  
Tim ---------- ---------- ---------- ----------