Question

What percent of 84 is 21?

Answer 1

Answer
$25\%$
Explanation ;
Do
$\frac{100\%}{x\%}=\frac{84}{21}$
Solve for x
$\left(\frac{100}{x}\right)\times x=\left(\frac{84}{21}\right)\times x$ [multiply both sides of the equation by x]
$100=4x$ [divided both sides of the equation by 4 to get x ]
$\frac{100}{4}=\frac{4x}{4}$
$25=x$

25 percent of 84 is 21.