What is 2100 percent of 840 - step by step solution

Simple and best practice solution for 2100% of 840. 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 840 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 840 is 100%, so we can write it down as 840=100%.
4. We know, that x is 2100% of the output value, so we can write it down as x=2100%.
5. Now we have two simple equations:
1) 840=100%
2) x=2100%
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:
840/x=100%/2100%
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 2100% of 840

840/x=100/2100
(840/x)*x=(100/2100)*x       - we multiply both sides of the equation by x
840=0.047619047619048*x       - we divide both sides of the equation by (0.047619047619048) to get x
840/0.047619047619048=x
17640=x
x=17640

now we have:
2100% of 840=17640

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