Percentage Calculator: What is 40 percent of 30.? = 12

40 percent *30. =

(40:100)*30. =

(40*30.):100 =

1200:100 = 12

Now we have: 40 percent of 30. = 12

Question: What is 40 percent of 30.?

Percentage solution with steps:

Step 1: Our output value is 30..

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

Step 3: From step 1 above,{30.}={100\%}.

Step 4: Similarly, {x}={40\%}.

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

{30.}={100\%}(1).

{x}={40\%}(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{30.}{x}=\frac{100\%}{40\%}

Step 7: Again, the reciprocal of both sides gives

\frac{x}{30.}=\frac{40}{100}

\Rightarrow{x} = {12}

Therefore, {40\%} of {30.} is {12}

Percentage of

Difference

30. percent *40 =

(30.:100)*40 =

(30.*40):100 =

1200:100 = 12

Now we have: 30. percent of 40 = 12

Question: What is 30. percent of 40?

Percentage solution with steps:

Step 1: Our output value is 40.

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

Step 3: From step 1 above,{40}={100\%}.

Step 4: Similarly, {x}={30.\%}.

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

{40}={100\%}(1).

{x}={30.\%}(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{40}{x}=\frac{100\%}{30.\%}

Step 7: Again, the reciprocal of both sides gives

\frac{x}{40}=\frac{30.}{100}

\Rightarrow{x} = {12}

Therefore, {30.\%} of {40} is {12}

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