F
Just got mine back today. Its out of 40 so D was 15, C was 19, B was 24, A was 30 and A* was 36. ^_^
36
19 + 17 = 36
-36
No 19 is not a factor of 36. Some factors of 36 are 1,2,3,4,6,9,12,18 and 36.
11 is the lowest (36 is the highest)
its 90%
-36
55
100*19/36 = 52.8%
Use a proportion 19/36 = x/100 cross multiply = 52.777....... % or just take 19/36
19+36-47=8