She needs 45 more sticks of butter. This is because she already has two cakes, and 47-2=45. She can bake one more cake with each stick of butter, which means the answer is indeed 45. 
        
             
        
        
        
Answer:
12.5
Step-by-step explanation:
  
        
                    
             
        
        
        
4 1/4 kg grapes were left with her.
        
                    
             
        
        
        
Please list the answer options. I can solve but I need the answer options.
        
             
        
        
        
hence, the common ratio of the given G.P. is 3 or −3.