SOLUTION: 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 o

Question 122865: 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?
I tried the equation: [355(2/3) + 1/3x] = 76

Answer by checkley71(8403) (Show Source): You can put this solution on YOUR website!
(72+80+65+78+60)/5
355/5=71 AVERAGE FOR THE FIRST 5 TEST RESULTS.
71*2/3+1/3X=76 CALCULATING 2/3 OF THE FIRST 5 TESTS + 1/3 OF THE FINAL TEST SCORE.
142/3+X/3=76
47.33+X/3=76
X/3=76-47.33
X/3=28.67
X=3*28.67
X=86 IS THE REQUIRED TEST SCORE ON THE FINAL TEST TO AVERAGE 76.
RELATED QUESTIONS
A Student has test scores of 72, 80, 65, 78, and 60. If the final exam counts as... (answered by Edwin McCravy)

Before the final exam, a student has test scores of 72, 80, 65, 78, and 60. If the final... (answered by ankor@dixie-net.com)

Before the final exam, a student has 5 test scores of equal weight: 72, 80, 65, 78, and... (answered by ankor@dixie-net.com)

Before the final exam, a student has test scores of 72,83,65,73, and 62. If the final... (answered by Shana-D77)

A student obtained 37% in the final exam, and has a year mark of 90%. His final mark is... (answered by edjones)

Going into the final exam, which counts as two grades, Kendra has test scores of 84, 78,... (answered by ankor@dixie-net.com)

Going into the final exam, which counts as two grades, you have the following test scores (answered by nerdybill)

Christian has scores of 68, 65, 75, and 78 on his algebra tests. Use a compound... (answered by ewatrrr,TimothyLamb)

Suppose a professor counts the final exam as being equal to each of the other tests in... (answered by JulietG)