What is 420 percent of 7 - step by step solution

Simple and best practice solution for 420% of 7. 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 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 7 is 100%, so we can write it down as 7=100%.
4. We know, that x is 420% of the output value, so we can write it down as x=420%.
5. Now we have two simple equations:
1) 7=100%
2) x=420%
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:
7/x=100%/420%
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 420% of 7

7/x=100/420
(7/x)*x=(100/420)*x       - we multiply both sides of the equation by x
7=0.238095238095*x       - we divide both sides of the equation by (0.238095238095) to get x
7/0.238095238095=x
29.4=x
x=29.4

now we have:
420% of 7=29.4

 

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