# 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) Ayush 90 50 90 60 70 80 Aman 100 80 80 40 80 70 Sajal 90 60 70 70 90 70 Rohit 80 65 80 80 60 60 Muskan 80 65 85 95 50 90 Tanvi 70 75 65 85 40 60 Tarun 65 35 50 77 80 80

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
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:
49 comments Page 1 of 5.

Samyukta said:   1 year ago
Why are we taking 1/7? Please explain.

Lalitha said:   1 year ago
As they have given the percentage of marks, we need to calculate the actual marks, so 90% means, 90/100 (120). From this, we get the actual marks scored.

Correct me, If my concept is wrong.

Deki said:   1 year ago
It's simple.

You can add all the marks obtained in physics by 7students, you will get 520 of 120.
Here of 120 mean: result/100 * total mark.
120/100 * 520 = 624
(1)

Karma Tshering said:   2 years ago
How do we calculate 1 over 7 multiple by total percentage obtain by individual?

Xayaz said:   2 years ago
How could 50%of 120 become 50? Anyone can tell me? Please.

Ramji said:   2 years ago

Soni said:   2 years ago
Thank you all for explaining this.

Agada Samuel said:   2 years ago
520/7 = 74.28
74.28 * 120 = 8913.6
8913.6/100 = 89.136
= 89.14.

Prem Sagar said:   3 years ago
520 marks are received for 7 students out of 840 marks.

Average marks received are 74 approximately.

Milan Pipaliya said:   3 years ago
In Computer Science Max Mark is 40, But Student Marks is given up to 90. How can we get 90 marks even Max mark is 40 only.