SOLUTION: The total of all the scores that Sam received on his four tests in German is 338. What must Sam receive on his fifth test in order for his average to be an 87?

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Question 590384: The total of all the scores that Sam received on his four tests in German is 338. What must Sam receive on his fifth test in order for his average to be an 87?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
using the definition of an average:
+%28+338+%2B+x+%29+%2F+5+=+87+
+338+%2B+x+=+5%2A87+
+x+=+435+-+338+
+x+=+97+
Sam needs a 97 on the 5th test