The following table shows the marks (in percentages) obtained by six students in four different subjects in an examination. Maximum marks in each subject are 100.
|
Student |
SUBJECT |
|||
|
|
SST |
PHYSICS |
CHEMISTRY |
MATHS |
|
A |
92 |
90 |
90 |
80 |
|
B |
90 |
80 |
85 |
85 |
|
C |
80 |
80 |
65 |
70 |
|
D |
85 |
80 |
82 |
75 |
|
E |
80 |
75 |
75 |
85 |
|
F |
90 |
90 |
90 |
85 |
Answer the following question based on the table:
What is the number of students whose overall percentage obtained is 80% and above?
Answer & explanation
Correct answer: option 1
Overall percentage of A = \(\frac{92 + 90 + 90 + 80 }{400}\) × 100
= 88%
Overall percentage of B = \(\frac{90 + 80 + 85 + 85 }{400}\) × 100
= 85%
Overall percentage of C = \(\frac{80 + 80 + 65 + 70 }{400}\) × 100
= 73.75%
Overall percentage of D = \(\frac{85 + 80 + 82 + 75 }{400}\) × 100
= 80.5%
Overall percentage of E = \(\frac{80 + 75 + 75 + 85 }{400}\) × 100
= 78.75%
Overall percentage of F = \(\frac{90 + 90 + 90 + 85 }{400}\) × 100
= 88.75%
Students with more than 80% are A , B , D & F
Number of students with overall percentage more than 80% = 4