Khan/khan-exercises — Issue #4514: Algebra challenge - ???
Author: KhanBugz
Created: 2011-10-18 01:10:41+00:00
State: open
Labels: ie8, ie9, win7

just says emily is 2x as daniel

[algebra_challenge.html?seed=11&problem=solve-older-3 (age_word_problems)](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/algebra_challenge.html?seed=11&problem=solve-older-3&debug)

["21"]

Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/5.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; InfoPath.2; AmSavS)

MathJax is loaded, ready, queue length: 0