data not matching in Pivot table

Hello Dear Friends,

I need your help in solving a query of mine.

I have a master sheet which has names of four students.

when i use pivot table on it two things happen.

when i put both the columns of master in Row of pivot the total of timk doesnt matches with master. but when i put mark in values it gives the right total.

i want to know why this is happening.

is there any way by which total can be corrected in row label only in pivot.

friends please help me in solving this.

Thanks alot in advance.

Thanks
Shane