SOLUTION: in his first five math tests this year john had an average score of 8. in his next two tests he scored 7 and 5 and after his eight test his average stood at 7.5. his score in the e

Question 753178: in his first five math tests this year john had an average score of 8. in his next two tests he scored 7 and 5 and after his eight test his average stood at 7.5. his score in the eighth test was?
Answer by Cromlix(4381) (Show Source): You can put this solution on YOUR website!
The average of the first 5 tests was 8
so, the total was 5 * 8 = 40
The next two tests totaled = 12
Running total = 52
Average after 8th test = 7.5
Total = 8 * 7.5 = 60
Therefore John's score in the 8th
test = 8 (60 - 52).
Hope this helps
:-)

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