37 as 3×10 is 30 + the left over (7) = 37
75/100 or 3/4 if you simplify it
Andrew answered 34 questions correctly.
I got the answer by divided the 85% by 100% (100% because it's the total percentage.) I received 0.85 when dividing that. Then, I took the 0.85 and divided it by the total of 40 questions, and that gave me the answer of 34.

So the answer is 27.27% approximately