SOLUTION: in a class of 25 students the average score is 84. six students in the class each have an average score of 100 and three students each have an average of 60. What is the average sc

Question 971065: in a class of 25 students the average score is 84. six students in the class each have an average score of 100 and three students each have an average of 60. What is the average score of the remaining students?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
So the sum of all the scores is,

For the six students,

So,

.
.
For the three students,

.
.
Let's call the sum of the remaining students scores, Z.

Substituting,

Since there are 25 students, subtract 6, subtract 3 to get the number of students in Z.

So then the average of the Z students is,

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