Answer:
The average score is 73
Explanation:
Your average score is the sum of each of your tests scores multiplied by the weight of the test.
We have that:
You scored 90 on the midterm
The midterm is worth 30%
You scored 60 on the final
The final is worth 50%
You scored 80 on the class project
The class project is 20%
Average score:
A = 90*0.3 + 60*0.5 + 80*0.2 = 73