xslt compare two different nodes and then combine

Question

I have a requirement where i need to show the difference amount () based on two different values which is in different section.The input xml as b

Answer 1

This is your solution to sum these values:

XSLT:

OUTPUT:

   
      LTRW00
      34142
      Cr
      1250
   
   
      LUL500
      34142
      Cr
      300
   
   
      1550