Typo. "one an a half hours" => "one and a half hours"
    
        | author | riceissa <riceissa@gmail.com> | 
    
        | date | Thu, 19 Apr 2012 20:49:59 -0700 | 
    
    
        | parents | ee7e65e9658e | 
    
        | children | c3b3b48d8f51 | 
    
        | branches/tags | (none) | 
    
        | files | chapters/07.markdown | 
Changes
    
--- a/chapters/07.markdown	Sun Apr 08 15:34:54 2012 -0400
+++ b/chapters/07.markdown	Thu Apr 19 20:49:59 2012 -0700
@@ -74,7 +74,7 @@
 your work, it takes ten seconds.
 
 Assuming you charge $100 per hour for freelance work, you've got to make up one
-an a half hours of time for this investment to be worthwhile.  If you're saving
+and a half hours of time for this investment to be worthwhile.  If you're saving
 50 seconds per photo, you need to take about 109 photos for project to pay for
 itself.