The person who answered this did really good on explaining this bc I need it too
        
                    
             
        
        
        
54. B. 
55. A
I'm pretty sure these are the answers. I hope that helped with those two
        
             
        
        
        
Answer:It is worth one beat, therefore it can be divided into two equal beats. One eighth note is worth half a beat, so two eighth notes equals one beat and make up one quarter note. For a quarter note to be subdivided, we divide it twice, or by four.
Explanation: