Khan/khan-exercises — Issue #7331: Algebra challenge - answer is wrong
Author: KhanBugz
Created: 2011-11-30 04:34:58+00:00
State: open
Labels: chrome, vista, wrong-or-unclear

[algebra_challenge.html?seed=124&problem=GABC_DEF (solving_for_a_variable)](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/algebra_challenge.html?seed=124&problem=GABC_DEF&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/algebra_challenge.html?seed=124&problem=GABC_DEF&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5C%22None%20of%20the%20above.%5C%22%22%2C78%5D%2C%5B%22incorrect-activity%22%2C%22%5C%22%3Ccode%20style%3D%5C%5C%5C%22display%3A%20none%3B%20%5C%5C%5C%22%3Eq%3D%20%5C%5C%5C%5Cdfrac%7B8r%20%2B%207s%20%2B%208%7D%7Brs%7D%3C%2Fcode%3E%5C%22%22%2C19%5D%2C%5B%22correct-activity%22%2C%22%5C%22%3Ccode%20style%3D%5C%5C%5C%22display%3A%20none%3B%20%5C%5C%5C%22%3Eq%3D%20%5C%5C%5C%5Cdfrac%7B6r%20%2B%209s%20%2B%208%7D%7Brs%7D%3C%2Fcode%3E%5C%22%22%2C5%5D%5D)

["None of the above.","q= \\dfrac{8r + 7s + 8}{rs}","q= \\dfrac{6r + 9s + 8}{rs}"]

Mozilla/5.0 (Windows NT 6.0) AppleWebKit/535.2 (KHTML, like Gecko) Chrome/15.0.874.121 Safari/535.2

MathJax is loaded, ready, queue length: 0