The given bar graph shows the number of students of two schools over a period of six years.

In the bar graph, in which year is the absolute difference of the students from schools A to B taken together, the maximum?

2012

By solving for each option one by one

1. 2012

Difference in students school of A & school B = 900 - 500 = 400

2. 2011

Difference in students school of A & school B = 750 - 700 = 50

3. 2013

Difference in students school of A & school B = 750 - 480 = 270

4. 2010

Difference in students school of A & school B = 600 - 500 = 100

So , Difference is maximum i.e 400 in year 2012.