4/100 of which is 0.8
To find out what fraction of a number a certain value represents, you can set up a simple proportion.
In this case, we want to find out what fraction of a number is represented by 0.8. Let's call the number x.
We can set up the following proportion:
0.8 / x = 4/100
To solve this proportion, cross multiply:
(0.8) * (100) = (4) * (x)
80 = 4x
Now, divide both sides of the equation by 4 to isolate x:
80/4 = x
x = 20
So, 4/100 of 20 is equal to 0.8.
4/100 x = 0.8
x = 0.8 * 100/4