Horse Trade
				Riddle:  A man buys a horse for $60. He sells the horse for $70.  He then buys the horse back for $80.  And he sells the horse again for $80. How much profit did he make?
			
			
								 	Answer: $20.
								Source: https://riddles.com/6742
			
			
					
					
										
					
										
										
					
										
																				
							
							  
							
															
							