17 out of 42 divided by 17 out of 28
17 out of 42 divided by 17 out of 28
=17 out of 42 times 28 out of 17
=28 out of 42
=2 / 3
17 out of 20 = 68 divided by () = (): 60 = ()
17 out of 20 = 68 divided by (80) = (51): 60 = (0.85)