X and y =4? is there more information about the question?
        
                    
             
        
        
        
Answer:
   29 × 51 inches
Step-by-step explanation:
If the scale is ...
   photo : painting = 1 : 3
then each dimension of the painting is 3 times the corresponding dimension of the photo. The painting is (3×13) by (3×17) inches, or 39 × 51 inches.
 
        
             
        
        
        
ticket sale on Saturday night is triple the ticket sale on Friday night.
Therefore 
ticket sales on Saturday night = 3 x 12425 = 37275
Then
ticket sales for both nights = 12425 + 37275 = 49700
A ticket costs 35.
Let the number of people that attended the carnival on both nights be n.
Then, we have

Therefore 1420 people attended the carnival on both nights