10 is what percent of 78.09 - 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 78.09 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 78.09, so we can write it down as 100%=78.09.
4. We know, that x% equals 10 of the output value, so we can write it down as x%=10.
5. Now we have two simple equations:
1) 100%=78.09
2) x%=10
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%=78.09/10
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 10 is what percent of 78.09

100%/x%=78.09/10
(100/x)*x=(78.09/10)*x       - we multiply both sides of the equation by x
100=7.809*x       - we divide both sides of the equation by (7.809) to get x
100/7.809=x
12.805736970163=x
x=12.805736970163

now we have:
10 is 12.805736970163% of 78.09