What is 0.01 percent of 6390 - 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 6390 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 6390 is 100%, so we can write it down as 6390=100%.
4. We know, that x is 0.01% of the output value, so we can write it down as x=0.01%.
5. Now we have two simple equations:
1) 6390=100%
2) x=0.01%
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:
6390/x=100%/0.01%
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 0.01% of 6390

6390/x=100/0.01
(6390/x)*x=(100/0.01)*x       - we multiply both sides of the equation by x
6390=10000*x       - we divide both sides of the equation by (10000) to get x
6390/10000=x
0.639=x
x=0.639

now we have:
0.01% of 6390=0.639