The difference between 50 and 20 is: 
The difference between 86 and 47 is: 
The difference between 55 and 20 is: 
The difference between 50 and 20 is: 
The difference between 50 and 20 is: 
The difference between 50 and 30 is: 
The difference between 52 and 26 is: 
The difference between 50 and 20 is: 