Data Interpretation - Table Charts - Discussion

A school has four sections A, B, C, D of Class IX students.

The results of half yearly and annual examinations are shown in the table given below.

Result No. of Students
Section A Section B Section C Section D
Students failed in both Exams28231727
Students failed in half-yearly
but passed in Annual Exams
1412813
Students passed in half-yearly
but failed in Annual Exams
617915
Students passed in both Exams64554676

4. 

Which section has the maximum success rate in annual examination?

[A]. A Section
[B]. B Section
[C]. C Section
[D]. D Section

Answer: Option A

Explanation:

Total number of students passed in annual exams in a section

= [ (No. of students failed in half-yearly but passed in annual exams)

        + (No. of students passed in both exams)

   ] in that section

Therefore Success rate in annual exams in Section A

    = [ No. of students of Section A passed in annual exams x 100 ] %
Total number of students in Section A

    = [ (14 + 64) x 100 ] %
(28 + 14 + 6 + 64)

    = [ 78 x 100 ] %
112

    = 69.64%.

Similarly, success rate in annual exams in:

Section B [ (12 + 55) x 100 ] % = [ 67 x 100 ] % = 62.62%.
(23 + 12 + 17 + 55) 107

Section C [ (8 + 46) x 100 ] % = [ 54 x 100 ] % = 67.5%.
(17 + 8 + 9 + 46) 80

Section D [ (13 + 76) x 100 ] % = [ 89 x 100 ] % = 67.94%.
(27 + 13 + 15 + 76) 131

Clearly, the success rate in annual examination is maximum for Section A.


Sushant said: (Nov 11, 2014)  
How can I solve these questions in minimum time?

Shadab Akhtar said: (May 5, 2016)  
@Sushant.

Do You want to calculate it in minimum time?

Just see the maximum number of students who have passed the annual examination.
By seeing in each section you will know that section A has maximum no. of students i.e 14 , so the correct answer is 14.

Post your comments here:

Name *:

Email   : (optional)

» Your comments will be displayed only after manual approval.