Percentage Calculator: What is 2.5 percent of 840? = 21

2.5 percent *840 =

(2.5:100)*840 =

(2.5*840):100 =

2100:100 = 21

Now we have: 2.5 percent of 840 = 21

Question: What is 2.5 percent of 840?

Percentage solution with steps:

Step 1: Our output value is 840.

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

Step 3: From step 1 above,{840}={100\%}.

Step 4: Similarly, {x}={2.5\%}.

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

{840}={100\%}(1).

{x}={2.5\%}(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{840}{x}=\frac{100\%}{2.5\%}

Step 7: Again, the reciprocal of both sides gives

\frac{x}{840}=\frac{2.5}{100}

\Rightarrow{x} = {21}

Therefore, {2.5\%} of {840} is {21}

Percentage of

Difference

840 percent *2.5 =

(840:100)*2.5 =

(840*2.5):100 =

2100:100 = 21

Now we have: 840 percent of 2.5 = 21

Question: What is 840 percent of 2.5?

Percentage solution with steps:

Step 1: Our output value is 2.5.

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

Step 3: From step 1 above,{2.5}={100\%}.

Step 4: Similarly, {x}={840\%}.

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

{2.5}={100\%}(1).

{x}={840\%}(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{2.5}{x}=\frac{100\%}{840\%}

Step 7: Again, the reciprocal of both sides gives

\frac{x}{2.5}=\frac{840}{100}

\Rightarrow{x} = {21}

Therefore, {840\%} of {2.5} is {21}

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