Observe the above graph which gives the information of the results of grade X and XI of a particular school over the years. In which year did both the grades perform the best in that school?
1
2008-09
2
2009-10
3
2005-06
4
2007-08
Observe the above graph which gives the information of the results of grade X and XI of a particular school over the years. In which year did both the grades perform the best in that school?