0.45 is what percent of 2.05 - 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 2.05 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 2.05, so we can write it down as 100%=2.05.
4. We know, that x% equals 0.45 of the output value, so we can write it down as x%=0.45.
5. Now we have two simple equations:
1) 100%=2.05
2) x%=0.45
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%=2.05/0.45
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 0.45 is what percent of 2.05

100%/x%=2.05/0.45
(100/x)*x=(2.05/0.45)*x       - we multiply both sides of the equation by x
100=4.5555555555556*x       - we divide both sides of the equation by (4.5555555555556) to get x
100/4.5555555555556=x
21.951219512195=x
x=21.951219512195

now we have:
0.45 is 21.951219512195% of 2.05