Question

Linh has obtained scores of 84, 75, and 73 on her midterm algebra exams. If the final exam counts twice as much as a midterm, what score must she make on her final exam to get an average score of 80?

Answer 1

(86+73+71+x+x)/5=80

86+73+71+2x=400

230+2x=400

2x=400-230

2x=170

x=170/2

x=85 is what she has to get on her final exam