Khan/khan-exercises — Issue #14394: Discount tax and tip word problems - Rounding Error
Author: KhanBugz
Created: 2012-02-22 11:30:19+00:00
State: open
Labels: ie8, win7, wrong-or-unclear

Reporter: casualjames@gmail.com

In this particular question, it is asked that you calculate the amount of a 4.5% sales tax on a $107 purchase. The amount of tax comes to $4.815, which should be rounded to $4.82, but the correct answer is listed as $4.81

[discount_tax_and_tip_word_problems.html?seed=103&problem=simple-tax](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/discount_tax_and_tip_word_problems.html?seed=103&problem=simple-tax&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/discount_tax_and_tip_word_problems.html?seed=103&problem=simple-tax&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5C%224.82%5C%22%22%2C17%5D%2C%5B%22hint-activity%22%2C%220%22%2C15%5D%2C%5B%22incorrect-activity%22%2C%22%5C%22%244.82%5C%22%22%2C17%5D%2C%5B%22hint-activity%22%2C%220%22%2C1%5D%2C%5B%22hint-activity%22%2C%220%22%2C4%5D%2C%5B%22correct-activity%22%2C%22%5C%22%244.81%5C%22%22%2C14%5D%5D)

["4.82","$4.82","$4.81"]

Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; Tablet PC 2.0; InfoPath.3)

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