Question 1081804: Eric wants to earn 92 final average on his math class the score on his first five tests are 85 82 95 97 98 what must Eric score on his last test to earn a 92 on average
Found 2 solutions by treeman183, MathTherapy:
Answer by treeman183(1)   (Show Source):
You can put this solution on YOUR website! Imagine all number as 92. 92,92,92,92,92,92.You have to make these numbers 82,85,95,97,98 and one other number. To start, you move the numbers around. If you add to one number, subtract that from the other. 85,99,92,92,92,92. Then, 85,82,109,92,92,92. Then, 85,82,95,106,92,92. After, 85,82,95,97,101,92. Lastly, 85,82,92,97,98,95. This shows that Eric has to get a 95 to get an average of 92 for test scores
Answer by MathTherapy(10552)  (Show Source):
You can put this solution on YOUR website!
Eric wants to earn 92 final average on his math class the score on his first five tests are 85 82 95 97 98 what must Eric score on his last test to earn a 92 on average
Let final score needed, be F
Then we get: 
Add, cross-multiply and then solve for F, the final score.
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