Match formula when arrays are not identical

[Ferena]

Detailed Descriptions,
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

 

[Hui]

C5:
=IF(COUNT(C2:C4)=3,C2*0.2+C3*0.1+C4*0.7,IF(COUNT(C2:C4)=1,SUM(C2:C4),IF(ISBLANK(C2),C3*0.3+C4*0.7,IF(ISBLANK(C3),C2*0.3+C4*0.7,C2*0.7+C3*0.3))))

Copy across and to row 9

Also your value of 0.3 in C13 should be 3

 

[Ferena]

This was a life saver!! Thanks