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

In the bar graph, what is the ratio of the students taken for years the 2008, 2012, 2013 together from school A to the students taken for the years 2009, 2010, 2011 together from school B?

229 : 217

Students of A in 2008 , 2012 , 2013  :   students of B in 2009 , 2010 , 2011

        ( 640 + 900 + 750 )                :        ( 820 + 600  + 750 )

                   2290                           :               2170     

                    229                            :                217