Data Interpretation - Table Charts - Discussion
Discussion Forum : Table Charts - Table Chart 3 (Q.No. 5)
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 |
5.
What is the overall percentage of Tarun?
Answer: Option
Explanation:
Aggregate marks obtained by Tarun
= [ (65% of 150) + (35% of 130) + (50% of 120)
+ ((77% of 100) + (80% of 60) + (80% of 40) ]
= [ 97.5 + 45.5 + 60 + 77 + 48 + 32 ]
= 360.
The maximum marks (of all the six subjects)
= (150 + 130 + 120 + 100 + 60 + 40)
= 600.
 Overall percentage of Tarun = |
 |
360 | x 100 |  |
% = 60%. |
| 600 |
Discussion:
21 comments Page 3 of 3.
Tom said:
1 decade ago
Hey everyone, please help me out here with sg.
Why do we assume that the subjects are not equal, i.e. they need to be weighted according to the maximum amount of points achievable in each?
I believe that if I achieve 15% in maths and 90% in CS, my overall performance will be 15%+90%/2= 52,5% and not 30,78% (15%x150+90%x40)/190 - after all, this is only fair.
Sticking to my above example, if maths test was 150, and CS was 1000 points, my overall result would be a stunning 80,21%, which I think would be a bit unfair, considering that I have just failed maths miserably.
Let me know what you think.
Why do we assume that the subjects are not equal, i.e. they need to be weighted according to the maximum amount of points achievable in each?
I believe that if I achieve 15% in maths and 90% in CS, my overall performance will be 15%+90%/2= 52,5% and not 30,78% (15%x150+90%x40)/190 - after all, this is only fair.
Sticking to my above example, if maths test was 150, and CS was 1000 points, my overall result would be a stunning 80,21%, which I think would be a bit unfair, considering that I have just failed maths miserably.
Let me know what you think.
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