Khan/khan-exercises — Issue #12509: Percentage word problems 2 - Pleease use proper wordeing with word problems.
Author: KhanBugz
Created: 2012-01-31 00:47:44+00:00
State: open
Labels: firefox, vista, wrong-or-unclear

Reporter: scottjohnson@surewest.net

This is a problem listed under "percentage word problems 2":
Christopher has 147% more money today than he did this time last year. If Christopher has $345 today, how much money did he make over this past year? (Round to the nearest cent, or hundredth of a dollar.)

Your solution is wrong, as it uses 147 as the total percent. If the problem stated he has 47% more than last year, then you would use 147%. You could also state he has 147% of what he had last year. However, this is NOT what the problem states - it states he has 147% percent more thatn last year - this would be 100%+147%=247%!

[percentage_word_problems_2.html?seed=110&problem=yearly-percentages-2](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/percentage_word_problems_2.html?seed=110&problem=yearly-percentages-2&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/percentage_word_problems_2.html?seed=110&problem=yearly-percentages-2&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5C%22139.68%5C%22%22%2C78%5D%2C%5B%22hint-activity%22%2C%220%22%2C3%5D%2C%5B%22hint-activity%22%2C%220%22%2C8%5D%5D)

["139.68"]

Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.2.25) Gecko/20111212 Firefox/3.6.25 (.NET CLR 3.5.30729)

MathJax is loaded, ready, queue length: 0