Khan/khan-exercises — Issue #8403: Adding and subtracting decimals word problems - Hos much faster was Christopher than Jessica?
Author: KhanBugz
Created: 2011-12-12 07:13:11+00:00
State: open
Labels: ipad, safari, wrong-or-unclear

Reporter: thomasplahn@yahoo.se

The answer is baser on that there are 100 sec's to à minute. So the given answer 15.53 should instead be 15.13.

[adding_and_subtracting_decimals_word_problems.html?seed=45&problem=1](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/adding_and_subtracting_decimals_word_problems.html?seed=45&problem=1&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/adding_and_subtracting_decimals_word_problems.html?seed=45&problem=1&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5C%2215.13%5C%22%22%2C137%5D%2C%5B%22hint-activity%22%2C%220%22%2C6%5D%2C%5B%22hint-activity%22%2C%220%22%2C16%5D%2C%5B%22hint-activity%22%2C%220%22%2C20%5D%2C%5B%22hint-activity%22%2C%220%22%2C24%5D%2C%5B%22hint-activity%22%2C%220%22%2C40%5D%2C%5B%22hint-activity%22%2C%220%22%2C49%5D%2C%5B%22hint-activity%22%2C%220%22%2C50%5D%5D)

["15.13"]

Mozilla/5.0 (iPad; U; CPU OS 4_3_5 like Mac OS X; sv-se) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8L1 Safari/6533.18.5

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