What is 66.9 percent of 85 - 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 85 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 85 is 100%, so we can write it down as 85=100%.
4. We know, that x is 66.9% of the output value, so we can write it down as x=66.9%.
5. Now we have two simple equations:
1) 85=100%
2) x=66.9%
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:
85/x=100%/66.9%
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 66.9% of 85

85/x=100/66.9
(85/x)*x=(100/66.9)*x       - we multiply both sides of the equation by x
85=1.4947683109118*x       - we divide both sides of the equation by (1.4947683109118) to get x
85/1.4947683109118=x
56.865=x
x=56.865

now we have:
66.9% of 85=56.865