Question 99866
(80+82+94+71+X)/5=85
(327+X)/5=85 NOW CROSS MULTIPLY
327+X=5*85
327+X=425
X=425-327
X=98 ANSWER FOR THE GRADE NEEDED ON THE FINAL TEST TO GET AN 85 AVERAGE.
PROOF
(80+82+94+71+98)/5=85
425/5=85
85=85