Do you need a unit rate? Or do you have an attatchment for me to solve the unit rate? If you need an example of a unit rate one could be:
27 gallons. 
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$3. Cost
27 divided by 3 is 9
9 gallons
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Per dollar 
        
             
        
        
        
Answer:
2y
Step-by-step explanation:
 
        
             
        
        
        
305+213=518 
1000-518= 482 
The answer is there is 482 less crayons then a thousand