SOLUTION: In Algebra class, Bob has scored an 81, 83, 70, and a 86. What score does Bob need on his fifth test to obtain an average of 82? (Assume all tests are equally weighed

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Question 757248: In Algebra class, Bob has scored an 81, 83, 70, and a 86. What score does Bob need on his fifth test to obtain an average of 82? (Assume all tests are equally weighed
Answer by LearnWithMajor(33) About Me  (Show Source):
You can put this solution on YOUR website!
Let x = the score he makes on the 5th test
%2881%2B83%2B70%2B86%2Bx%29%2F5+=+82
81%2B83%2B70%2B86%2Bx+=+410
320+%2B+x+=+410
x+=+90