0
$\begingroup$

I've done a search for the answer but still couldn't figure it out.

Say for example:

Year 1 Result = 80% (Weight:20%)

Year 2 Result = 70% (Weight:10%)

Year 3 Result = Unknown (Weight:70%)

I've not yet got my results for year 3. I want to calculate what my average percentage is so far, based on year 1 and 2 and what I would need to achieve in my 3rd year with a weighting of 70%.

Thanks.

  • 0
    What are you trying to get? I assume you are trying to weigh grades in a class or something and trying to find out what you need on Year 3 to get a certain grade in the class. If you provide what you are trying to get we can help.2011-10-17
  • 0
    I'm trying to achieve a 70% average across 3 years with those weightings. Thanks2011-10-17

2 Answers 2