A student had taken six tests and received scores of 88, 73, 81, 83, 79, 94. What does he have to score in his next test to get a mean score of 83?

1 Answer
Dec 10, 2015

The student would have to get an #82# on the next test

Explanation:

Let #x# be the test score the student has to get.

The total number of test is #7#

calculate the mean and solve for #x#

#(88+73+81+83+79+95+x)/7=83#

Combine like terms

#(499+x)/7=83#

Multiply both sides by #7#

#499+x=581#

Subtract #499# from both sides

#x=82#