A student’s average score for \(10\) tests was \(x.\) The grader then discovered that there was an error on two of the

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A student’s average score for \(10\) tests was \(x.\) The grader then discovered that there was an error on two of the tests. On one of the tests, the student’s score should have been \(10\) points lower. On another test, the student’s score should have been \(20\) points higher. After the grader corrects these mistakes, what is the student’s new average, in terms of \(x?\)

A. \(x - 1\)
B. \(x\)
C. \(x + 1\)
D. \(x + 10\)
E. \(x + 20\)

The OA is C
Source: — Problem Solving |