When you have ratios and some unknowns you can create complex fractions from them.Bring them to the same denominator and solve for X.
        
             
        
        
        
Answer:
Initial Fee is $2.
Step-by-step explanation:
Given:
Stops  Price (dollars)
3         6.50
7         12.50
11         18.50
Also Given:
The price of a train ticket consists of an initial fee plus a constant fee per stop.
So let the Cost of initial fee be 'x'.
Also Let the Cost of Constant fee be 'y'.
Now Equation can framed as;

Now According to table;
Number of stops = 3
Price = 6.50
So equation can be framed as;

Also According to table;
Number of stops = 7
Price = 12.50
So equation can be framed as;

Now Subtracting equation 1 from equation 2 we get;

Substituting the value of y in equation 1 we get;

Hence Initial Fee is $2.
 
        
                    
             
        
        
        
Answer:
8minutes per mile
Step-by-step explanation:
You ran 3 miles since 9am divide 24 by 3 to get 8 minutes
 
        
             
        
        
        
1 dollar = 103 Japanese yen 10 dollars=1034 yen 20 dollars=2067 yen 50 dollars=5168 100=10337 yen