7 is what percent of 87.7 - 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 87.7 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 87.7, so we can write it down as 100%=87.7.
4. We know, that x% equals 7 of the output value, so we can write it down as x%=7.
5. Now we have two simple equations:
1) 100%=87.7
2) x%=7
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%=87.7/7
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 7 is what percent of 87.7

100%/x%=87.7/7
(100/x)*x=(87.7/7)*x       - we multiply both sides of the equation by x
100=12.528571428571*x       - we divide both sides of the equation by (12.528571428571) to get x
100/12.528571428571=x
7.981755986317=x
x=7.981755986317

now we have:
7 is 7.981755986317% of 87.7

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