First we multiply the old wage by 15% or 0.15
to find out how much more money she will get.

   $4 3 2 0
      0.1 5
  2 1 6 0 0
  4 3 2 0 0
 $6 4 8.0 0  <-- that's the dollar amount of increase.

Now we add that to the old wage to get the new wage:

   $4 3 2 0.0 0
      6 4 8.0 0
   $4 9 6 8.0 0   <-- that's her new wage.   



Edwin