Khan/khan-exercises — Issue #9130: Rate problems 1 - Having Trouble Understanding.
Author: KhanBugz
Created: 2011-12-20 21:51:33+00:00
State: open
Labels: chrome, hard, leopard

I am having trouble understanding rate problems 1.
I can get to the point of adding the two orange equations together, but I can figure out how to calculate all variables.

[rate_problems_1.html?seed=104&problem=3](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/rate_problems_1.html?seed=104&problem=3&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/rate_problems_1.html?seed=104&problem=3&debug&activity=%5B%5B%22hint-activity%22%2C%220%22%2C145%5D%2C%5B%22hint-activity%22%2C%220%22%2C145%5D%2C%5B%22hint-activity%22%2C%220%22%2C145%5D%2C%5B%22hint-activity%22%2C%220%22%2C146%5D%2C%5B%22hint-activity%22%2C%220%22%2C146%5D%2C%5B%22hint-activity%22%2C%220%22%2C147%5D%2C%5B%22hint-activity%22%2C%220%22%2C147%5D%2C%5B%22hint-activity%22%2C%220%22%2C148%5D%2C%5B%22hint-activity%22%2C%220%22%2C148%5D%5D)

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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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