Final class average

[JDB67]

Before the final exam, a student has test scores of 72, 80, 65, 78, and 60. If the final exam counts as one-third of the final grade, what score must the student receive in order to have a final average of 76?

(72+80+65+78+60+ ? x)/6=76

Thanks,

JDB

 

[pka]

Before the final exam, a student has test scores of 72, 80, 65, 78, and 60. If the final exam counts as one-third of the final grade, what score must the student receive in order to have a final average of 76? (72+80+65+78+60+ ? x)/6=76

Suppose that \(\displaystyle D=\frac{72+80+65+78+60}{5}\) is your 'daily' average.
If the final is one third you need to solve:
\(\displaystyle \dfrac{2D+x}{3}=76~.\)