The long answer is <span>28.571428%, but I would round it upwards to make it seem more realistic.</span>
        
             
        
        
        
For this case we have to by definition:
1 kilojoule equals 0.239006 kilocalorie.
1 kilocalorie equals 1000 calories
Then, if we have:
Now:

Answer:

 
        
             
        
        
        
The associative property allows you to change the <em>grouping</em> of addends or factors without changing the value of the expression.