SOLUTION: 2) Devin has scored 73, 90, and 84 on the first three exams in his math class. If the standard 70,80,90 scale is used for grades and the exams are equally weighted, what is the min

Question 1038307: 2) Devin has scored 73, 90, and 84 on the first three exams in his math class. If the standard 70,80,90 scale is used for grades and the exams are equally weighted, what is the minimum he can score on the final exam in order to:
a) get a C average on exams?
b) get a B average on exams?
c) get an A average on exams?
Answer by jorel555(1290) (Show Source): You can put this solution on YOUR website!
73+90+84=247
a)4*70=280,280-247=33 to get a C average;
b)4*80=320,320-247=73 to get a B average;
c)4*90=360,360-247=113 to get an A average!!!!!!!!!!!!!!
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