Exam Of Result Sheet Calculation

			Total Marks: 30
	Student Name	Math	Physics	Biology	Total	Highest	Lowest	Average
	Nadia	56	67	45	168	67	45	56.00
	Michelle	67	34	56	157	67	34	52.33
	George	89	90	78	257	90	78	85.67
	Hasan	23	34	90	147	90	23	49.00
	Abdullah	56	89	45	190	89	45	63.33
	Abdul Hamid	56	89	78	223	89	56	74.33
	Priyanka	78	78	89	245	89	78	81.67
	Tomal	78	56	90	224	90	56	74.67
	Shohid	24	45	45	114	45	24	38.00
Find Grading for above student (Note: 80 to 100 is HD,  70 to 80 is D, 60 to 70 is C, 59 and less fail)
	Student Name	Math	Physics	Biology
	Nadia	Fail	C	Fail
	Michelle	C	Fail	Fail
	George	HD	HD	D
	Hasan	Fail	Fail	HD
	Abdullah	Fail	HD	Fail
	Abdul Hamid	Fail	HD	D
	Priyanka	D	D	HD
	Tomal	D	Fail	HD
	Shohid	Fail	Fail	Fail
	Total HD	7
	Total D	5
	Total C	2
	Total Fail	13