What is 8.7 percent of 1397 - 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 1397 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 1397 is 100%, so we can write it down as 1397=100%.
4. We know, that x is 8.7% of the output value, so we can write it down as x=8.7%.
5. Now we have two simple equations:
1) 1397=100%
2) x=8.7%
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:
1397/x=100%/8.7%
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 8.7% of 1397

1397/x=100/8.7
(1397/x)*x=(100/8.7)*x       - we multiply both sides of the equation by x
1397=11.494252873563*x       - we divide both sides of the equation by (11.494252873563) to get x
1397/11.494252873563=x
121.539=x
x=121.539

now we have:
8.7% of 1397=121.539