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Mind Games

March 26, 2014
By Patti Harrell of Vardaman High School



Rubik’s Cube Contest

    The six top finishers in a Rubik’s cube contest solved the cube in 0:35, 0.53, 1:22, 1:36, 2:04, and 2:38.  Each started by completing a different top color: blue, green, orange, red, white, and yellow.  Of the six, three began K4 together (Nicole, Grace, and Sara), and three joined the class (Lori, Becky, and Brookelin).  From the information given, determine how long it took for each girl to solve the cube and what color each one used as a top starting color.

  1. Grace’s time was faster than Sara’s time but slower than Lori’s time; these three girls, like the girl from K4 who won the contest, did not begin with orange or green on top.
  2. The girl from K4 who started with red finished later than the girl who started with orange but earlier than the girl from K4 who started with blue.
  3. The girl who started with yellow on top finished earlier than Becky but not first.
  4. Sara finished the cube earlier than Brookelin.

 

 

If you want an organizer to help you, see the document "2014 Rubik's Cube Contest" in the documents section near the bottom of the home page.


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