385.5 is what percent of 405 - 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 405 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 405, so we can write it down as 100%=405.
4. We know, that x% equals 385.5 of the output value, so we can write it down as x%=385.5.
5. Now we have two simple equations:
1) 100%=405
2) x%=385.5
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%=405/385.5
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 385.5 is what percent of 405

100%/x%=405/385.5
(100/x)*x=(405/385.5)*x       - we multiply both sides of the equation by x
100=1.0505836575875*x       - we divide both sides of the equation by (1.0505836575875) to get x
100/1.0505836575875=x
95.185185185185=x
x=95.185185185185

now we have:
385.5 is 95.185185185185% of 405