Answer:
124 tiles
Step-by-step explanation:
2(20+40)
2(60)
120+4=124
 
        
             
        
        
        
You have said that he used 180 in the first two weeks.
That left him with 200 at the end of the first two weeks.
Then you said that he had 2 left after another 2 weeks.
So during those 2 weeks, he used (200 - 2) = 198 in the 2nd 2 weeks.
What we all expected has not happened at all:  Frank is not slowing down ! 
But, even so, we have to ask ourselves just what Frank is doing with them all.
Nobody can blame you for wondering.
        
                    
             
        
        
        
Answer:
(1,1)(3,-2)
Step-by-step explanation:
a hope this answer helping you
 
        
                    
             
        
        
        
Step-by-step explanation:
hope it is helpful to you
 
        
                    
             
        
        
        
The answer to this problem is 48.