SOLUTION: to earn a B in a course a student must have a final average of 80. on the first three tests a student has scores of 76,74, and 78. what must the student earn on the fianl test to g

Question 546041: to earn a B in a course a student must have a final average of 80. on the first three tests a student has scores of 76,74, and 78. what must the student earn on the fianl test to get a B in the course?
Answer by guitarheroguy(26) (Show Source): You can put this solution on YOUR website!
Okay, our numbers we have:
76,74, and 78
We just need to experiment with numbers.
We'll say the student got a 92. Let's see their grade.
76+74+78+92=320
320/4=80
So.... The student would need a 92% to get a final grade of "B" in the course.
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