SOLUTION: The average mark on a test is 80. If the two lowest scores of 34 and 48 are not counted, the remaining scores would average 83. How many students are in the algebra class?

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Question 805234: The average mark on a test is 80. If the two lowest scores of 34 and 48 are not counted, the remaining scores would average 83. How many students are in the algebra class?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
The average mark on a test is 80. If the two lowest scores of 34 and 48 are not counted, the remaining scores would average 83. How many students are in the algebra class?
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Let "x" be the number of students in the class.
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Equations:
(sum of scores of all the students) = 80x
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(sum of scores -(34+48)) = 83(x-2)
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S = 80x
S - 82 = 83x-166
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80x = 83x+82-166
3x = 166-82 = 84
x = 28 (# of students in the class)
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Cheers,
Stan H.
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