SOLUTION: in a math class of 21 students the average score on the most recent test was 77%. if sarahs grade was 95% and jacks grade was 78% find the average grade of the remaining 19 student

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Question 1000802: in a math class of 21 students the average score on the most recent test was 77%. if sarahs grade was 95% and jacks grade was 78% find the average grade of the remaining 19 students
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
in a math class of 21 students the average score on the most recent test was 77%. if sarahs grade was 95% and jacks grade was 78% find the average grade of the remaining 19 students
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(78 + 95 + 19x)/21 = 77
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(173 + 19x)/21 = 77
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173 + 19x = 1617
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x = 76%
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Cheers,
Stan H.
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