Math Is Fun Forum

Hi Guys,

I need help pls...

I recently submitted three pieces of work for my class with the first being graded at 89% and worth 20% of my overall module mark.  The second test was marked at 90% and was worth 30% of my total overall mark.  However, I wasn't told of the mark for my final peice of submitted work which was worth 50% of my total grade.

My overall grade for the class was 80.6% so what was my mark for my final peice of work?

Can someone explain how I would work this out?

Thanks.