Solution for 7.5 is what percent of 21:

7.5:21*100 =

(7.5*100):21 =

750:21 = 35.714285714286

Now we have: 7.5 is what percent of 21 = 35.714285714286

Question: 7.5 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\%}={7.5}.

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

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

{x\%}={7.5}(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}{7.5}

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

\frac{x\%}{100\%}=\frac{7.5}{21}

\Rightarrow{x} = {35.714285714286\%}

Therefore, {7.5} is {35.714285714286\%} of {21}.

Solution for 21 is what percent of 7.5:

21:7.5*100 =

(21*100):7.5 =

2100:7.5 = 280

Now we have: 21 is what percent of 7.5 = 280

Question: 21 is what percent of 7.5?

Percentage solution with steps:

Step 1: We make the assumption that 7.5 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\%}={7.5}.

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

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

{100\%}={7.5}(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{7.5}{21}

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

\frac{x\%}{100\%}=\frac{21}{7.5}

\Rightarrow{x} = {280\%}

Therefore, {21} is {280\%} of {7.5}.