Using xsl:if

Problem:   Print the name of the students and averages greater than 70

XML Input file (students.xml):

XSL Style Sheet:

<?xml version="1.0"?> 
<xsl:stylesheet version="1.0" 
                xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
   <xsl:output method="text"/>
   <xsl:template match="course">
      <xsl:apply-templates select="student"/>
   </xsl:template>

   <xsl:template match="student">
      <xsl:variable name="ave">
         <xsl:value-of select="(hw1 + hw2 + project + final) div 4"/>
      </xsl:variable>
      <xsl:if test="$ave > 70">
         Student name="<xsl:value-of select="name"/>" 
         average="<xsl:value-of select="$ave"/>"
      </xsl:if>
   </xsl:template>
</xsl:stylesheet>

Output file (grades70.txt):

Student name="George Lucas" 
        average="77.5"
      
Student name="Elizabeth Roberts" 
        average="73.75"