What is 1280 percent of 2.25 - 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 2.25 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 2.25 is 100%, so we can write it down as 2.25=100%.
4. We know, that x is 1280% of the output value, so we can write it down as x=1280%.
5. Now we have two simple equations:
1) 2.25=100%
2) x=1280%
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:
2.25/x=100%/1280%
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 1280% of 2.25

2.25/x=100/1280
(2.25/x)*x=(100/1280)*x       - we multiply both sides of the equation by x
2.25=0.078125*x       - we divide both sides of the equation by (0.078125) to get x
2.25/0.078125=x
28.8=x
x=28.8

now we have:
1280% of 2.25=28.8