Direction: A table is given below, study the table carefully and answer the following question.
The given table represents the marks obtained by four students W. X, Y and Z in four subjects P, C, B and M. with the maximum marks in each subject being 100.
|
Stu/sub |
P |
C |
B |
M |
|
W |
70 |
90 |
50 |
85 |
|
X |
55 |
80 |
95 |
60 |
|
Y |
60 |
20 |
90 |
40 |
|
Z |
90 |
80 |
40 |
65 |
The difference between the highest and the lowest percentage (P, C, M and B together) among the four students is:
1
21.20
2
21.25
3
21.52
4
21.75