What is 1485 percent of 21 - step by step solution

To get the solution, we are looking for, we need to point out what we know.

1. We assume, that the number 21 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 21 is 100%, so we can write it down as 21=100%.
4. We know, that x is 1485% of the output value, so we can write it down as x=1485%.
5. Now we have two simple equations:
1) 21=100%
2) x=1485%
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:
21/x=100%/1485%
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 1485% of 21

21/x=100/1485
(21/x)*x=(100/1485)*x       - we multiply both sides of the equation by x
21=0.067340067340067*x       - we divide both sides of the equation by (0.067340067340067) to get x
21/0.067340067340067=x
311.85=x
x=311.85

now we have:
1485% of 21=311.85