Study the following line graph which gives the number of students who joined and left the school in the beginning of year for six years, from 1996 to 2001.
Initial Strength of school in 1995 = 3000.
For which year is the percentage rise/fall in the number of students who left the school compared to the previous year the maximum?
1997
1998
1999
2000
Correct answer is A
The percentage rise/fall in the number of students who left the school (compared to the previous year) during various years are:
For 1997 = [ (450 - 250)/250 x 100 ] % = 80% (rise).
For 1998 = [ (450 - 400)/450 x 100 ] % = 11.11% (fall).
For 1999 = [ (400 - 350)/400 x 100 ] % = 12.5% (fall).
For 2000 = [ (450 - 350)/350 x 100 ] % = 28.57% (rise).
For 2001 = [ (450 - 450)/450 x 100 ] % = 0%.
Clearly, the maximum percentage rise/fall is for 1997.