Khan/khan-exercises — Issue #12863: Rate problems 1 - Should 0 should be an acceptable answer?
Author: KhanBugz
Created: 2012-02-02 03:21:01+00:00
State: open
Labels: chrome, other, win7

Reporter: s.menke@gmail.com

Since 0 is the correct answer, Omar did not travel by bike at all. So saying that he traveled at an average speed of 9 mph by bike is incorrect. Basically, I think 0 should be prevented from being an answer.

[rate_problems_1.html?seed=59&problem=2](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/rate_problems_1.html?seed=59&problem=2&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/rate_problems_1.html?seed=59&problem=2&debug&activity=%5B%5B%22correct-activity%22%2C%22%5B%5C%220%5C%22%5D%22%2C58%5D%5D)

[["0"]]

Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.7 (KHTML, like Gecko) Chrome/16.0.912.75 Safari/535.7

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