Answer :

21  because one fourth of 80 is 20 and one fourth of 4 is 1, so 84/4=21
What is 25% of 84?

Convert 25% into a decimal by moving the decimal two to the left⇒.25 which is [tex] \frac{1}{4} [/tex]

Then multiply .25 by 84 which is 21

Answer is 21
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To check, multiply 21 by 4 (since it is [tex] \frac{1}{4} [/tex] which is 84)