Here, triangle AEN and ALG are similar.
We know that the ratio of corresponding sides of two similar triangles are equal. So,

 
        
             
        
        
        
Answer:
y=3x+10 
Step-by-step explanation:
I dont think it is the right form but that Is an equation for it 
 
        
                    
             
        
        
        
Dang if not digit is used more than once then i go with 720 :)
        
                    
             
        
        
        
Let
x-----------> the number of kids
y----------> the number of adults
we know that
2.5x+6y=$7150---------> equation 1
x=2y-------------> equation 2
substitute 2 in 1
2.5*[2y]+6y=7150-----> 5y+6y=7150----> 11y=7150-----> y=650
x=2y----> x=2*650----> 1300
the answer is
the number of kids is 1300
        
             
        
        
        
in simplist form it should be 3x+16