0.8 is what percent of 3.95 - 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 3.95 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 3.95, so we can write it down as 100%=3.95.
4. We know, that x% equals 0.8 of the output value, so we can write it down as x%=0.8.
5. Now we have two simple equations:
1) 100%=3.95
2) x%=0.8
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%=3.95/0.8
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 0.8 is what percent of 3.95

100%/x%=3.95/0.8
(100/x)*x=(3.95/0.8)*x       - we multiply both sides of the equation by x
100=4.9375*x       - we divide both sides of the equation by (4.9375) to get x
100/4.9375=x
20.253164556962=x
x=20.253164556962

now we have:
0.8 is 20.253164556962% of 3.95