To get the solution, we are looking for, we need to point out what we know.
1. We assume, that the number 450 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 450 is 100%, so we can write it down as 450=100%. 4. We know, that x is 900% of the output value, so we can write it down as x=900%. 5. Now we have two simple equations: 1) 450=100% 2) x=900% 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: 450/x=100%/900% 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 900% of 450
450/x=100/900 (450/x)*x=(100/900)*x - we multiply both sides of the equation by x 450=0.111111111111*x - we divide both sides of the equation by (0.111111111111) to get x 450/0.111111111111=x 4050=x
