What is 20 percent of 51.37 - 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 51.37 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 51.37 is 100%, so we can write it down as 51.37=100%.
4. We know, that x is 20% of the output value, so we can write it down as x=20%.
5. Now we have two simple equations:
1) 51.37=100%
2) x=20%
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:
51.37/x=100%/20%
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for what is 20% of 51.37

51.37/x=100/20
(51.37/x)*x=(100/20)*x       - we multiply both sides of the equation by x
51.37=5*x       - we divide both sides of the equation by (5) to get x
51.37/5=x
10.274=x
x=10.274

now we have:
20% of 51.37=10.274