Percentage Calculator: What is 21 percent of 400.? = 84

21 percent *400. =

(21:100)*400. =

(21*400.):100 =

8400:100 = 84

Now we have: 21 percent of 400. = 84

Question: What is 21 percent of 400.?

Percentage solution with steps:

Step 1: Our output value is 400..

Step 2: We represent the unknown value with {x}.

Step 3: From step 1 above,{400.}={100\%}.

Step 4: Similarly, {x}={21\%}.

Step 5: This results in a pair of simple equations:

{400.}={100\%}(1).

{x}={21\%}(2).

Step 6: By dividing equation 1 by equation 2 and noting that both the RHS (right hand side) of both
equations have the same unit (%); we have

\frac{400.}{x}=\frac{100\%}{21\%}

Step 7: Again, the reciprocal of both sides gives

\frac{x}{400.}=\frac{21}{100}

\Rightarrow{x} = {84}

Therefore, {21\%} of {400.} is {84}

Percentage of

Difference

400. percent *21 =

(400.:100)*21 =

(400.*21):100 =

8400:100 = 84

Now we have: 400. percent of 21 = 84

Question: What is 400. percent of 21?

Percentage solution with steps:

Step 1: Our output value is 21.

Step 2: We represent the unknown value with {x}.

Step 3: From step 1 above,{21}={100\%}.

Step 4: Similarly, {x}={400.\%}.

Step 5: This results in a pair of simple equations:

{21}={100\%}(1).

{x}={400.\%}(2).

Step 6: By dividing equation 1 by equation 2 and noting that both the RHS (right hand side) of both
equations have the same unit (%); we have

\frac{21}{x}=\frac{100\%}{400.\%}

Step 7: Again, the reciprocal of both sides gives

\frac{x}{21}=\frac{400.}{100}

\Rightarrow{x} = {84}

Therefore, {400.\%} of {21} is {84}

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