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Match formula when arrays are not identical

Katherine82
Katherine82 asked
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Last Modified: 2015-11-04
I need to add multiple conditions and looking for a formula that summarizes the result. Please see the excel spreadsheet attached.
In the table below I would like to get a summary table by applying a formula based on the several conditions.They are
IF all the three (Self, Internal and External) are present then the Formula should be(20%Self+10%Internal+30%External)
IF only External and Internal are present then the formula should be (70%external+ 30% internal)
If only External and self are present then the formula should be (70% external+30% Internal)
If only Internal and self are present then the formula should be (30% Internal+70% self)
If only one type of Nomination (Self, Internal or External) if present then. Apply 100% of that.
Employee ID      Nomination      Part 1      Part 2      Part 3      Part 4      Part 5      Part 6      Part 7
1      Self      4.0            2.0                  4.0      4.0
1      Internal      2.0                  2.0      4.0            3.0
1      External      3.0      2.0                  1.0      2.0      
      result      3.1      2.0      2.0      2.0      1.9      2.6      3.7
2      Self            2.0                  4.0      3.0      5.0
2      Internal      3.0      3.0      6.0                        2.0
2      External            5.0      2.0      2.0            2.0      
      result      0.3      4.2      3.2      2      4      2.3      4.1
                                                
Employee ID      Summary                                          
1            3.1      2      2      2      1.9      2.6      3.7
2            0.3      4.2      3.2      2      4      2.3      4.1
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