What is 5.16 percent of 645 - 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 645 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 645 is 100%, so we can write it down as 645=100%.
4. We know, that x is 5.16% of the output value, so we can write it down as x=5.16%.
5. Now we have two simple equations:
1) 645=100%
2) x=5.16%
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:
645/x=100%/5.16%
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 5.16% of 645

645/x=100/5.16
(645/x)*x=(100/5.16)*x       - we multiply both sides of the equation by x
645=19.37984496124*x       - we divide both sides of the equation by (19.37984496124) to get x
645/19.37984496124=x
33.282=x
x=33.282

now we have:
5.16% of 645=33.282