What is 31.5 percent of 40.5 - step by step solution

Simple and best practice solution for 31.5% of 40.5. 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 40.5 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 40.5 is 100%, so we can write it down as 40.5=100%.
4. We know, that x is 31.5% of the output value, so we can write it down as x=31.5%.
5. Now we have two simple equations:
1) 40.5=100%
2) x=31.5%
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:
40.5/x=100%/31.5%
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 31.5% of 40.5

40.5/x=100/31.5
(40.5/x)*x=(100/31.5)*x       - we multiply both sides of the equation by x
40.5=3.1746031746032*x       - we divide both sides of the equation by (3.1746031746032) to get x
40.5/3.1746031746032=x
12.7575=x
x=12.7575

now we have:
31.5% of 40.5=12.7575

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