Khan/khan-exercises — Issue #6833: Pre-algebra challenge - unclear
Author: KhanBugz
Created: 2011-11-21 20:00:12+00:00
State: open
Labels: firefox, snowleo, wrong-or-unclear

[pre-algebra_challenge.html?seed=190&problem=english (units)](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/pre-algebra_challenge.html?seed=190&problem=english&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/pre-algebra_challenge.html?seed=190&problem=english&debug&activity=%5B%5D)

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Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:5.0.1) Gecko/20100101 Firefox/5.0.1

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