Nah, that puzzle was actually written wrong so I edited it with a different one .... sorry.  Blame it on Satin.
Edit: You are right next to a river and have a 5 gallon container and a 3 gallon container. You need to measure out 1 gallon of water. How do you do it?
(From the movie, "Die Harder)"
            
                        
                            
                                
                            
                        
                            
                                
                            
                        
                            
                                
                            
                        