Homework Help: Math

Posted by Kaelyn on Tuesday, October 2, 2012 at 6:51pm.

the average for a grade on a test taken by 20 students was 75. When one more student took the test the class average became a 76. What score did the student make?

Math - Jennifer, Wednesday, October 3, 2012 at 1:29pm
The average after the next student took the test was

(20*75 + x)/21 = 76

Solve for x

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