Where is the list will all of this the list is needed
        
             
        
        
        
Answer:
skp
Step-by-step explanation:
 
        
             
        
        
        
Let y be the total number of the bike that are produced 
let x be the number of hours 
equation:
y = 15x
        
                    
             
        
        
        
Hope this helps!
28 - 13 = 15
15 x 12 = 180 Fifth graders