What is 5 percent of 638 - step by step solution

Simple and best practice solution for 5% of 638. 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 638 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 638 is 100%, so we can write it down as 638=100%.
4. We know, that x is 5% of the output value, so we can write it down as x=5%.
5. Now we have two simple equations:
1) 638=100%
2) x=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:
638/x=100%/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 5% of 638

638/x=100/5
(638/x)*x=(100/5)*x       - we multiply both sides of the equation by x
638=20*x       - we divide both sides of the equation by (20) to get x
638/20=x
31.9=x
x=31.9

now we have:
5% of 638=31.9

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