13 is what percent of 810000 - 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 810000 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 810000, so we can write it down as 100%=810000.
4. We know, that x% equals 13 of the output value, so we can write it down as x%=13.
5. Now we have two simple equations:
1) 100%=810000
2) x%=13
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%=810000/13
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 13 is what percent of 810000

100%/x%=810000/13
(100/x)*x=(810000/13)*x       - we multiply both sides of the equation by x
100=62307.692307692*x       - we divide both sides of the equation by (62307.692307692) to get x
100/62307.692307692=x
0.0016049382716049=x
x=0.0016049382716049

now we have:
13 is 0.0016049382716049% of 810000