Percentage Calculator
15 is what percent of 21?
Solution for 15 is what percent of 21:
15: 21*100 =
( 15*100): 21 =
1500: 21 = 71.43
Now we have: 15 is what percent of 21 = 71.43
Question: 15 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\%}={ 15}.
Step 5: This gives us a pair of simple equations:
{100\%}={ 21}(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{ 21}{ 15}
Step 7: Taking the inverse (or reciprocal) of both sides yields
\frac{x\%}{100\%}=\frac{ 15}{ 21}
\Rightarrow{x} = {71.43\%}
Therefore, { 15} is {71.43\%} of { 21}.
Solution for 21 is what percent of 15:
21: 15*100 =
( 21*100): 15 =
2100: 15 = 140
Now we have: 21 is what percent of 15 = 140
Question: 21 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\%}={ 21}.
Step 5: This gives us a pair of simple equations:
{100\%}={ 15}(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{ 15}{ 21}
Step 7: Taking the inverse (or reciprocal) of both sides yields
\frac{x\%}{100\%}=\frac{ 21}{ 15}
\Rightarrow{x} = {140\%}
Therefore, { 21} is {140\%} of { 15}.