Question 432357: A student averages 84 on five test. If the student received grades of 84,82,81, and 79 on the first
four exams, what grade did the student receive on the fifth exam?
Answer by algebrahouse.com(1659)   (Show Source):
You can put this solution on YOUR website! "A student averages 84 on five test. If the student received grades of 84,82,81, and 79 on the first four exams, what grade did the student receive on the fifth exam?"
84 + 82 + 81 + 79 + x
---------------------- = 84 {average is numbers added together and divided by number of numbers}
5
326 + x
-------- = 84 {added list of numbers}
5
326 + x = 420 {multiplied both sides by 5}
x = 94 {subtracted 326 from both sides}
the fifth exam score is 94
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