Answer:  30 percent of 20 is 6.
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Step-by-step explanation:
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(n/100)  * 20 = 6  ?   
Solve for "n"  .
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Divide each side of the equation by "20" :
{ (n/100) * 20 }  / 20  = 6 / 20 ; 
to get:
n/100  = 6/20 ;  
↔ 6/20 = n/100 ; solve for "n" ; 
Look at the denominators:
20 * ? = 100 ? 
   100/ 20 = ?  ;
   100/20 = 5 ; 
So, 20 *  " 5" = 100 ; 
Then 6* 5 = "n"  (for the numerator, "n";  in  :   "n /100" ) ; 
                   →  6 * 5 = 30 ; 
                   →  n = 30 . 
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   Answer:  30 percent of 20 is 6.
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