#### Solution for 15 is what percent of 20.9:

15:20.9*100 =

(15*100):20.9 =

1500:20.9 = 71.77033492823

Now we have: 15 is what percent of 20.9 = 71.77033492823

Question: 15 is what percent of 20.9?

Percentage solution with steps:

Step 1: We make the assumption that 20.9 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\%}={20.9}.

Step 4: In the same vein, {x\%}={15}.

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

{100\%}={20.9}(1).

{x\%}={15}(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{20.9}{15}

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

\frac{x\%}{100\%}=\frac{15}{20.9}

\Rightarrow{x} = {71.77033492823\%}

Therefore, {15} is {71.77033492823\%} of {20.9}.

#### Solution for 20.9 is what percent of 15:

20.9:15*100 =

(20.9*100):15 =

2090:15 = 139.33333333333

Now we have: 20.9 is what percent of 15 = 139.33333333333

Question: 20.9 is what percent of 15?

Percentage solution with steps:

Step 1: We make the assumption that 15 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\%}={15}.

Step 4: In the same vein, {x\%}={20.9}.

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

{100\%}={15}(1).

{x\%}={20.9}(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{15}{20.9}

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

\frac{x\%}{100\%}=\frac{20.9}{15}

\Rightarrow{x} = {139.33333333333\%}

Therefore, {20.9} is {139.33333333333\%} of {15}.

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