Thanks a world for ur wonderful help Mr. JBeaucaire and Mr. TMShucks!! 
Perfect!!
I've just merged both the problem solving methods in two separate worksheets of a single workbook... plz check below attached MS Workbook.
@ Mr. TMShucks - Why did u put { } (Ctrl+Shift+Enter) on the formula in the cell 'K4' for Ranking?
Question:
What if in these data worksheets when we get more numbers of tasks, then we have to make a huge list in the column A and B. B'cuz we don't know how much work will we get on today/ tomorrow/next to tomorrow. so the size (length) of Column A and B will be increased or decreased per day.
...so I need the result/ output, which shows according to the column A and B size.
Could u plz help me out in this too... ?? 
Thanks in Advance!
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