21 is what percent of 5720 - step by step solution

To get the solution, we are looking for, we need to point out what we know.

1. We assume, that the number 5720 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 100% equals 5720, so we can write it down as 100%=5720.
4. We know, that x% equals 21 of the output value, so we can write it down as x%=21.
5. Now we have two simple equations:
1) 100%=5720
2) x%=21
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
100%/x%=5720/21
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 21 is what percent of 5720

100%/x%=5720/21
(100/x)*x=(5720/21)*x       - we multiply both sides of the equation by x
100=272.38095238095*x       - we divide both sides of the equation by (272.38095238095) to get x
100/272.38095238095=x
0.36713286713287=x
x=0.36713286713287

now we have:
21 is 0.36713286713287% of 5720