[xsl] how to add

["ashu t" <aashut@xxxxxxxxxxxxxx>]

is it possible to add the contents of two different tags in xml to 
one through xsl.
like if xml is
<score>
  <first match>75 </first match>
  <second match> 75</second match>
  further matches .....
</score>


how can we get output like

<score>
  <total score>  here the addition of scores in all matches 
</total score>
</score>
ashu

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