Question

Twenty-four is __ % of 80.

Answer 1

We're gonna call the blank an x, so 24 is x% of 80.

80/24 = 3.33333 = x

100/x 
100/33.33333 = 30%

So, 24 is 30% of 80

Answer 2

You can set up the problem as a ratio like this:

24       x

----  = ----

80     100

Thus,  80x = 2400

Finally,    x = 30