30% of 30000 =9000
We assume that the number 30000 is 100% because it's the output value of the task.
We assume that x is the value we are looking for
If 30000 is 100% so we can write it down as 30000=100%
We know that x is 30% of the output value so we can write it down as x=30%.
Now we have two simple equations
1) 30000=100%
2) x=30%
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
30000/x=100%/30% Now we just have to solve the simple equation and we will get the solution we are looking for
Solution for what is 30% of 30000
30000/x=100/30
(30000/x)*x=(100/30)*x we multiply both sides of the equation by x
30000=3.33333333333*x we divide both sides of the equation by (3.33333333333) to get x
30000/3.33333333333=x
9000=x
x=9000
now we have:
30% of 30000=9000