Khan/khan-exercises — Issue #7117: Rate problems 1 - issue with rounding
Author: KhanBugz
Created: 2011-11-27 03:40:50+00:00
State: open
Labels: firefox, other, win7

Reporter: lutreeves@suddenlink.net

On this problem: Plugging in the distance for train (17) to solve for time is t = 17/15. 17/15 is 1.133 and then times 60 (60 seconds in an hour) the answer is 67.8. Rounding to nearest integer is 68 but the answer is 67. I have been doing these problems for hours, and I can do them but the rounding is not consistent when it comes to the time.

[rate_problems_1.html?seed=173&problem=2](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/rate_problems_1.html?seed=173&problem=2&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/rate_problems_1.html?seed=173&problem=2&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5C%2268%5C%22%22%2C240%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%2C4%5D%2C%5B%22hint-activity%22%2C%220%22%2C4%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%2C7%5D%2C%5B%22correct-activity%22%2C%22%5C%2267%5C%22%22%2C1184%5D%5D)

["68","67"]

Mozilla/5.0 (Windows NT 6.1; WOW64; rv:8.0) Gecko/20100101 Firefox/8.0

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