[Dilettante_Pro]

Еще что придумаете?

<table border="1" style="width: 300px; background: #E6E6E6;">
<tr><td><label><input type="checkbox" name="n1" value="1" id="n1" />100</label></td></tr>
<tr><td><label><input type="checkbox" name="n2" value="2" id="n2" />30</label></td></tr>
<tr><td><label><input type="checkbox" name="n3" value="3" id="n3" />60</label></td></tr>
<tr><td><label><input type="checkbox" name="n4" value="4" id="n4" />50</label></td></tr>
</table>
<input id="result"><input id="result2">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.0/jquery.min.js"></script>
<script>
$('tr').click(function() {
   $(this).find('input').click();
});
$("label").click(function(event) {
event.stopPropagation();
});
$("input").click(function(event) {
event.stopPropagation();
var sum = 0, sum2 = 0;
$("input:checked").each(function(){
 sum+= +$(this).val();
 sum2 += +$(this).parent().text();
});
$('#result').val(sum);
$('#result2').val(sum2);
}); 
</script>