What is 12.8 percent of 139 - step by step solution

Simple and best practice solution for 12.8% of 139. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

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To get the solution, we are looking for, we need to point out what we know.

1. We assume, that the number 139 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 139 is 100%, so we can write it down as 139=100%.
4. We know, that x is 12.8% of the output value, so we can write it down as x=12.8%.
5. Now we have two simple equations:
1) 139=100%
2) x=12.8%
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:
139/x=100%/12.8%
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 12.8% of 139

139/x=100/12.8
(139/x)*x=(100/12.8)*x       - we multiply both sides of the equation by x
139=7.8125*x       - we divide both sides of the equation by (7.8125) to get x
139/7.8125=x
17.792=x
x=17.792

now we have:
12.8% of 139=17.792

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