80 is what percent of 290.3 - 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 290.3 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 290.3, so we can write it down as 100%=290.3.
4. We know, that x% equals 80 of the output value, so we can write it down as x%=80.
5. Now we have two simple equations:
1) 100%=290.3
2) x%=80
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%=290.3/80
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 80 is what percent of 290.3

100%/x%=290.3/80
(100/x)*x=(290.3/80)*x       - we multiply both sides of the equation by x
100=3.62875*x       - we divide both sides of the equation by (3.62875) to get x
100/3.62875=x
27.557698932139=x
x=27.557698932139

now we have:
80 is 27.557698932139% of 290.3