1.  Which section has the maximum success rate in annual examination?
A. A Section
B. B Section
C. C section
D. D Section
E. Cannot be determined

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 Sec A
passed in annual exams		 x 100 ] %
Total number of students in Sec 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 ] % 
(23 + 12 + 17 + 55) 107

= 62.62%.

Section C

[ (8 + 46) x 100 ] % = [ 54 x 100 ] % 
(17 + 8 + 9 + 46) 80

= 67.5%.

Section D

[ (13 + 76) x 100 ] % = [ 89 x 100 ] % 
(27 + 13 + 15 + 76) 131

= 67.94%.

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