What is 1.9 percent of 42.21 - 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 42.21 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 42.21 is 100%, so we can write it down as 42.21=100%.
4. We know, that x is 1.9% of the output value, so we can write it down as x=1.9%.
5. Now we have two simple equations:
1) 42.21=100%
2) x=1.9%
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:
42.21/x=100%/1.9%
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 1.9% of 42.21

42.21/x=100/1.9
(42.21/x)*x=(100/1.9)*x       - we multiply both sides of the equation by x
42.21=52.631578947368*x       - we divide both sides of the equation by (52.631578947368) to get x
42.21/52.631578947368=x
0.80199=x
x=0.80199

now we have:
1.9% of 42.21=0.80199