It is 68/100. Because when you do 0.7 it equals 7/10 and when it is 0.78 it is 78/100. Just a few examples I put in. When ever you see something like 0.89 it is always hundreds. When you put something like 0.8 it is always tens. So that means 0.8 would be 8/10 in fraction form and 0.89 would be 89/100. Hope it helps!
The answer is 4/17 because you put it into 68/100, then you put it into simplest form.