ANSWER:
The triplets will be 7 years each. 21, divided by 7. 
 
        
             
        
        
        
27 peices i believe. 3 peices per yard, 9 yards. 9*3=27
        
             
        
        
        
120$ will probally be it hope this helped
        
             
        
        
        
Answer: 24
Step-by-step explanation:
Basically you just need to add the sides up to get your answer, its like breaking it up and adding simply.
 
        
                    
             
        
        
        
Answer:
81
Step-by-step explanation:
i added it all