What is 70 percent of 309 - step by step solution

Simple and best practice solution for 70% of 309. 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 309 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 309 is 100%, so we can write it down as 309=100%.
4. We know, that x is 70% of the output value, so we can write it down as x=70%.
5. Now we have two simple equations:
1) 309=100%
2) x=70%
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:
309/x=100%/70%
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 70% of 309

309/x=100/70
(309/x)*x=(100/70)*x       - we multiply both sides of the equation by x
309=1.42857142857*x       - we divide both sides of the equation by (1.42857142857) to get x
309/1.42857142857=x
216.3=x
x=216.3

now we have:
70% of 309=216.3

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