15 is what percent of 0.84 - 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 0.84 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 100% equals 0.84, so we can write it down as 100%=0.84.
4. We know, that x% equals 15 of the output value, so we can write it down as x%=15.
5. Now we have two simple equations:
1) 100%=0.84
2) x%=15
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:
100%/x%=0.84/15
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 15 is what percent of 0.84

100%/x%=0.84/15
(100/x)*x=(0.84/15)*x       - we multiply both sides of the equation by x
100=0.056*x       - we divide both sides of the equation by (0.056) to get x
100/0.056=x
1785.7142857143=x
x=1785.7142857143

now we have:
15 is 1785.7142857143% of 0.84