17.5 is what percent of 280000 - 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 280000 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 280000, so we can write it down as 100%=280000.
4. We know, that x% equals 17.5 of the output value, so we can write it down as x%=17.5.
5. Now we have two simple equations:
1) 100%=280000
2) x%=17.5
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%=280000/17.5
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 17.5 is what percent of 280000

100%/x%=280000/17.5
(100/x)*x=(280000/17.5)*x       - we multiply both sides of the equation by x
100=16000*x       - we divide both sides of the equation by (16000) to get x
100/16000=x
0.00625=x
x=0.00625

now we have:
17.5 is 0.00625% of 280000