94% of Jim's income last year came from his salary.  The rest came from awards his prize winning poodle won in dog shows.   If he won $9,600 in dog shows, what was his total income?
                            
                         
                        
                            
                        
                             
                            
                            
                            
                                Explanation
                            
                                
                                    Answer: B - $160,000.
In this case, 94% is a pretty lousy number to work with.  6% is much better.  
If 6% equals $9,600, then 1% = $1,600.  Thus, 100% is equal to $160,000.
Key Takeaway: This question is all about speed.  By finding easy numbers to work with, you can do this question in a flash.