Joe drove 315 miles on 15 gallons of gas. What is his mileage in miles/gallon?
miles/gallon 
       
      
                
     
    
     
    
    
    2  answers:
            
               
               
                
                
Answer: 
21 miles / gallon
Step-by-step explanation: 
Take the miles and divide by the gallons
315 miles / 15 gallons
21 miles / gallon
 
                                
             
                    
               
               
                
                
Answer: 
21 miles/gallon
Step-by-step explanation: 
To find his mileage in miles/gallon, divide the number of miles by the number of gallons. 
315/15 
= 21
= 21 miles/gallon 
 
                                
             
         	
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I hope it was as simple as that and that this helped!