Table charts - Data Interpretation Questions and Answers

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The number of students who obtained 60% and above marks in all subjects is?

None

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What was the aggregate of marks obtained by Sajal in all the six subjects?

409

419

429

449

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In which subject is the overall percentage the best?

Maths

Chemistry

Physics

History

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Answer : Option A

Explanation :

We shall find the overall percentage (for all the seven students) with respect to each subject.

The overall percentage for any subject is equal to the average of percentages obtained by all the seven students since the maximum marks for any subject is the same for all the students.

Therefore, overall percentage for:

(i) Maths = [ \(\frac { 1 } { 7} \) x (90 + 100 + 90 + 80 + 80 + 70 + 65)]%

= [\(\frac { 1 } { 7} \)x (575)]%

= 82.14%

(ii) Chemistry =[ \(\frac { 1 } { 7} \) x (50 + 80 + 60 + 65 + 65 + 75 + 35)]%

= [\(\frac { 1 } { 7} \)x (430)]%

= 61.43%

(iii) Physics = [ \(\frac { 1 } { 7} \) x (90 + 80 + 70 + 80 + 85 + 65 + 50)]%

= [ \(\frac { 1 } { 7} \)x (520)]%

= 74.29%

(iv) Geography = [\(\frac { 1 } { 7} \) x (60 + 40 + 70 + 80 + 95 + 85 + 77)]%

= [\(\frac { 1 } { 7} \) x (507)]%

= 72.43 %

(v) History = [ \(\frac { 1 } { 7} \)x (70 + 80 + 90 + 60 + 50 + 40 + 80)]%

= [ \(\frac { 1 } { 7} \) x (470)]%

= 67.14%

(vi) Comp science = [\(\frac { 1 } { 7} \) x (80 + 70 + 70 + 60 + 90 + 60 + 80)]%

= [\(\frac { 1 } { 7} \)x (510)]%

= 72.86 %

Clearly, this percentage is highest for Maths.

What is the overall percentage of Tarun?

52.5%

55%

60%

63%