8.5 is what percent of 6400 - 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 6400 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 6400, so we can write it down as 100%=6400.
4. We know, that x% equals 8.5 of the output value, so we can write it down as x%=8.5.
5. Now we have two simple equations:
1) 100%=6400
2) x%=8.5
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%=6400/8.5
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 8.5 is what percent of 6400

100%/x%=6400/8.5
(100/x)*x=(6400/8.5)*x       - we multiply both sides of the equation by x
100=752.94117647059*x       - we divide both sides of the equation by (752.94117647059) to get x
100/752.94117647059=x
0.1328125=x
x=0.1328125

now we have:
8.5 is 0.1328125% of 6400