45 is what percent of 388 - step by step solution

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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 388 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 100% equals 388, so we can write it down as 100%=388.
4. We know, that x% equals 45 of the output value, so we can write it down as x%=45.
5. Now we have two simple equations:
1) 100%=388
2) x%=45
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:
100%/x%=388/45
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 45 is what percent of 388

100%/x%=388/45
(100/x)*x=(388/45)*x       - we multiply both sides of the equation by x
100=8.6222222222222*x       - we divide both sides of the equation by (8.6222222222222) to get x
100/8.6222222222222=x
11.59793814433=x
x=11.59793814433

now we have:
45 is 11.59793814433% of 388

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