In a school the periodical examination are held every second month. In a session during April 2001 - March 2002, a student of Class IX appeared for each of the periodical exams. The aggregate marks obtained by him in each perodical exam are represented in the line-graph given below.
Marks Obtained by student in Six Periodical Held in Every Two Months During the Year in the Session 2001 - 2002.
Maximum Total Marks in each Periodical Exam = 500
In which periodical exams did the student obtain the highest percentage increase in marks over the previous periodical exams ?
June, 01
August, 01
Oct, 01
Dec, 01
Correct answer is C
Percentage increase in marks in various periodical exams compared to the previous exams are:
For Jun 01 = [ (365 - 360)/360 x 100 ] % = 1.39%.
For Aug 01 = [ (370 - 365)/365 x 100 ] % = 1.37%.
For Oct 01 = [ (385 - 370)/370 x 100 ] % = 4.05%.
For Dec 01 = [ (400 - 385)/385 x 100 ] % = 3.90%.
For Feb 02 = [ (404 - 400)/400 x 100 ] % = 1.25%.
Clearly, highest percentage increase in marks is in Oct 01.
