SO fiddle

Test Fiddle mainly for SO Questions

by Nick Craver

HTML

<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/themes/dot-luv/jquery-ui.css">
<div class="question">
<ol>
<li id="question_one">
<p><input type="radio" name="question_1" value="answer_1" />Corn</p>
<p><input type="radio" name="question_1" value="answer_2" />Cotton</p>
<p><input type="radio" name="question_1" value="answer_3" />Rice</p>
<p><input type="radio" name="question_1" value="answer_4" />Soybeans</p>
</li>
</ol>

<div id="q1_answer_1" class="show_answer">Corn 11.0%</div>
<div id="q1_answer_2" class="show_answer">Cotton 2.5%</div>
<div id="q1_answer_3" class="show_answer">Rice 11.0%</div>
<div id="q1_answer_4" class="show_answer">Soybeans 7.0%</div>
</div>

CSS

.show_answer { display: none; }

JavaScript

$(".question :radio").change(function() {
    $(this).closest('li').find(':radio').attr('disabled', true);
    $(this).closest(".question").find("div.show_answer").hide()
           .filter("[id$='" + $(this).val() +"']").show(100);
});