Data Interpretation - Table Charts - Discussion

Discussion Forum : Table Charts - Table Chart 3 (Q.No. 1)
Directions to Solve

The following table gives the percentage of marks obtained by seven students in six different subjects in an examination.

The Numbers in the Brackets give the Maximum Marks in Each Subject.

Student Subject (Max. Marks)
Maths Chemistry Physics Geography History Computer Science
(150) (130) (120) (100) (60) (40)
Ayush905090607080
Aman1008080408070
Sajal906070709070
Rohit806580806060
Muskan806585955090
Tanvi707565854060
Tarun653550778080


1.
What are the average marks obtained by all the seven students in Physics? (rounded off to two digit after decimal)
77.26
89.14
91.37
96.11
Answer: Option
Explanation:

Average marks obtained in Physics by all the seven students

 
= 1 x [ (90% of 120) + (80% of 120) + (70% of 120)
7
              + (80% of 120) + (85% of 120) + (65% of 120) + (50% of 120) ]
= 1 x [ (90 + 80 + 70 + 80 + 85 + 65 + 50)% of 120 ]
7
= 1 x [ 520% of 120 ]
7
= 624
7
= 89.14.

Discussion:
52 comments Page 6 of 6.

Shubham said:   9 years ago
The correct answer should be 74.29 as per average rule.

Saurabh gupta said:   9 years ago
@All.

There is a big mistake in the question. That is, all the marks obtained by a student (Not the marks percentage) but in the answer, they are using them as percentage marks! How? Explain me clearly.


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