What is 3.5 percent of 129 - step by step solution

Simple and best practice solution for 3.5% of 129. 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 129 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 129 is 100%, so we can write it down as 129=100%.
4. We know, that x is 3.5% of the output value, so we can write it down as x=3.5%.
5. Now we have two simple equations:
1) 129=100%
2) x=3.5%
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:
129/x=100%/3.5%
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 3.5% of 129

129/x=100/3.5
(129/x)*x=(100/3.5)*x       - we multiply both sides of the equation by x
129=28.5714285714*x       - we divide both sides of the equation by (28.5714285714) to get x
129/28.5714285714=x
4.515=x
x=4.515

now we have:
3.5% of 129=4.515

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