# Average on percentage but with different weightings

#### Riaang

##### Board Regular
Good day. I'm busy with performance reviews for staff but are battling with the following.

Section 1 for instance gives me an achieved percentage of 80% and the weighting for this section is 50.
Section 2 has a achieved percentage of 40% but the weighting for this section is only 30.
Section 3 has a achieved percentage of 60% but the weighting for this section is only 20.

I need to calculate the average percentage for the 3 sections together but I can't use 80% + 40% + 60% devide by 3 because the weighting for the 3 sections are not the same.

Can someone please help me in how I will get the average percentage for the 3 sections combined but taking in consideration the weighting.

Kind Regards

### Excel Facts

What is the fastest way to copy a formula?
If A2:A50000 contain data. Enter a formula in B2. Select B2. Double-click the Fill Handle and Excel will shoot the formula down to B50000.

#### Sulprobil

##### Board Regular
=80%*50%+40%*30%+60%*20%

=64%

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