Khan/khan-exercises — Issue #9173: Systems of equations word problems - Multiple answers possible (only one marked correct)
Author: KhanBugz
Created: 2011-12-21 11:00:50+00:00
State: open
Labels: chrome, leopard, wrong-or-unclear

As the two equations are really the same line, several other answers are possible (e.g. 7 teachers & 0 students; 0 teachers & 14 students; 1 teacher & 12 students).

[systems_of_equations_word_problems.html?seed=193&problem=elimination-x](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/systems_of_equations_word_problems.html?seed=193&problem=elimination-x&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/systems_of_equations_word_problems.html?seed=193&problem=elimination-x&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5B%5C%221%5C%22%2C%5C%2212%5C%22%5D%22%2C308%5D%2C%5B%22hint-activity%22%2C%220%22%2C2%5D%2C%5B%22hint-activity%22%2C%220%22%2C3%5D%2C%5B%22hint-activity%22%2C%220%22%2C3%5D%2C%5B%22hint-activity%22%2C%220%22%2C4%5D%2C%5B%22hint-activity%22%2C%220%22%2C5%5D%2C%5B%22hint-activity%22%2C%220%22%2C5%5D%2C%5B%22hint-activity%22%2C%220%22%2C5%5D%2C%5B%22hint-activity%22%2C%220%22%2C5%5D%5D)

[["1","12"]]

Mozilla/5.0 (Macintosh; Intel Mac OS X 10_5_8) AppleWebKit/535.7 (KHTML, like Gecko) Chrome/16.0.912.63 Safari/535.7

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