69 is what percent of 1580 - 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 1580 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 1580, so we can write it down as 100%=1580.
4. We know, that x% equals 69 of the output value, so we can write it down as x%=69.
5. Now we have two simple equations:
1) 100%=1580
2) x%=69
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%=1580/69
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 69 is what percent of 1580

100%/x%=1580/69
(100/x)*x=(1580/69)*x       - we multiply both sides of the equation by x
100=22.898550724638*x       - we divide both sides of the equation by (22.898550724638) to get x
100/22.898550724638=x
4.3670886075949=x
x=4.3670886075949

now we have:
69 is 4.3670886075949% of 1580