October 4, 2015

Homework Help: Math Olympiad

Posted by Usher on Wednesday, March 27, 2013 at 7:42pm.

Lara starts at the bottom of a long staircase. She climbs exactly 2/3 of the stairs. Then, she goes back down exactly 1/2 of the way to the bottom. From that spot, she climbs exactly 2/3 of the way to the top. Finally from there, she climbs 6 stairs to reach the top. How many stairs are in the staircase?

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