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Solution for 21 is what percent of 645:

21:645*100 =

(21*100):645 =

2100:645 = 3.26

Now we have: 21 is what percent of 645 = 3.26

Question: 21 is what percent of 645?

Percentage solution with steps:

Step 1: We make the assumption that 645 is 100% since it is our output value.

Step 2: We next represent the value we seek with {x}.

Step 3: From step 1, it follows that {100\%}={645}.

Step 4: In the same vein, {x\%}={21}.

Step 5: This gives us a pair of simple equations:

{100\%}={645}(1).

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

Step 6: By simply dividing equation 1 by equation 2 and taking note of the fact that both the LHS
(left hand side) of both equations have the same unit (%); we have

\frac{100\%}{x\%}=\frac{645}{21}

Step 7: Taking the inverse (or reciprocal) of both sides yields

\frac{x\%}{100\%}=\frac{21}{645}

\Rightarrow{x} = {3.26\%}

Therefore, {21} is {3.26\%} of {645}.

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Solution for 645 is what percent of 21:

645:21*100 =

(645*100):21 =

64500:21 = 3071.43

Now we have: 645 is what percent of 21 = 3071.43

Question: 645 is what percent of 21?

Percentage solution with steps:

Step 1: We make the assumption that 21 is 100% since it is our output value.

Step 2: We next represent the value we seek with {x}.

Step 3: From step 1, it follows that {100\%}={21}.

Step 4: In the same vein, {x\%}={645}.

Step 5: This gives us a pair of simple equations:

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

{x\%}={645}(2).

Step 6: By simply dividing equation 1 by equation 2 and taking note of the fact that both the LHS
(left hand side) of both equations have the same unit (%); we have

\frac{100\%}{x\%}=\frac{21}{645}

Step 7: Taking the inverse (or reciprocal) of both sides yields

\frac{x\%}{100\%}=\frac{645}{21}

\Rightarrow{x} = {3071.43\%}

Therefore, {645} is {3071.43\%} of {21}.