0.5 is what percent of 77000000000 - 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 77000000000 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 77000000000, so we can write it down as 100%=77000000000.
4. We know, that x% equals 0.5 of the output value, so we can write it down as x%=0.5.
5. Now we have two simple equations:
1) 100%=77000000000
2) x%=0.5
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%=77000000000/0.5
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 0.5 is what percent of 77000000000

100%/x%=77000000000/0.5
(100/x)*x=(77000000000/0.5)*x       - we multiply both sides of the equation by x
100=154000000000*x       - we divide both sides of the equation by (154000000000) to get x
100/154000000000=x
6.4935064935065E-10=x
x=6.4935064935065E-10

now we have:
0.5 is 6.4935064935065E-10% of 77000000000