The rules are simple. 30 minutes with me - C. 40 - B. 50 - A. How much do you want to be an A student?

13 40

23 44

11 20

30 43

3 10

18 42

7 10

19 40

27 41

11 20

24 41

23 43

20 42

11 40

12 10

25 42