5 is what percent of 21?


The question here is "5 is what percent of 21?" which is the same as "What percent of 21 is 5?" This math word problem is asking "what percent" so we know that the answer should be a percent. Specifically, what percent (x) of 21 equals 5.

The problem is therefore x% of 21 = 5 which can be written as a function:

   
x ∗ 21
 
   
100
  =  5  

And when we solve the function above for x, we get 23.81. The answer to "5 is what percent of 21?" is therefore:

23.81%

How can we know the answer is correct? We know the answer is correct because 23.81 percent of 21 is 5.


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