13 is what percent of 1511 - 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 1511 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 1511, so we can write it down as 100%=1511.
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%=1511
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%=1511/13
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 1511

100%/x%=1511/13
(100/x)*x=(1511/13)*x       - we multiply both sides of the equation by x
100=116.23076923077*x       - we divide both sides of the equation by (116.23076923077) to get x
100/116.23076923077=x
0.86035737921906=x
x=0.86035737921906

now we have:
13 is 0.86035737921906% of 1511