:2. A number is drawn at random from a box.  There is a 25%
chance for it to be 20 or less.  There is a 15% chance for it to
be 60 or more.  The chance for it to be bigger than 20 but less
than 60 is

   	
 a.  20% 

 	
 b.  70% 
 	
 
 	
 c.  40% 

 	
 d.  cannot be determined with the information given 

 	
 e.  can be determined with the information given, but the    
    right answer is not 20%, 40%, or 70%.