Sangeetha Pulapaka

The horizontal line represents the subject that Brett has, and the vertical line represents the score Brett scored in each subject.

The highest score Brett scored was in English. His score in English was 60. This means that English is his best subject.

The lowest score Brett scored was in Geography. His score in Geography was 25. This means Geography is his worst subject.

Brett score 60 - 25 = 35 more in his best subject.