document.write( "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? \n" ); document.write( "
Algebra.Com's Answer #458289 by Cromlix(4381)\"\" \"About 
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The average of the first 5 tests was 8
\n" ); document.write( "so, the total was 5 * 8 = 40
\n" ); document.write( "The next two tests totaled = 12
\n" ); document.write( "Running total = 52
\n" ); document.write( "Average after 8th test = 7.5
\n" ); document.write( "Total = 8 * 7.5 = 60
\n" ); document.write( "Therefore John's score in the 8th
\n" ); document.write( "test = 8 (60 - 52).\r
\n" ); document.write( "\n" ); document.write( "Hope this helps
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