Khan/khan-exercises — pull request #39732 by Helpsypoo (2013-02-09 22:51:47+00:00)
Title: New hints for age_word_problems

Here are some new hints for the age word problems. These hints convert the given information into a set of equations, then solve the equations.

I was going to add some subhints to point out other potential solution routes, but I couldn't get them to work. I used the following code to change colors in the problem statement:

<div class="graphie">
$(".first").addClass("hint_blue");
</div>

If this code is executed in a previous hint, the subhint link ends up being unclickable. Deleting the jQuery doesn't fix it, but deleting the entire "graphie" class division results in a functioning subhint.