The table given below shows the marks obtained by 4 students in 5 subjects.
|
Subjects |
Students |
|||
|
P1 |
P2 |
P3 |
P4 |
|
|
S1 |
89 |
100 |
92 |
91 |
|
S2 |
62 |
52 |
72 |
37 |
|
S3 |
57 |
55 |
70 |
65 |
|
S4 |
76 |
85 |
76 |
58 |
|
S5 |
85 |
70 |
66 |
62 |
The maximum marks of each subject is 100. What is the difference in the average marks per student for subjects S5 and S2?
1
12
2
15
3
17.5
4
19.5