document.write( "Question 878180: Paul earned scores of 76,78,and 86 on his first three science tests.What score does he need on his fourth test to earn a mean score of 82? \n" ); document.write( "
Algebra.Com's Answer #529771 by JulietG(1812)\"\" \"About 
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4 tests = 400 points possible
\n" ); document.write( ".82 * 400 = 328 needed for an 82 average
\n" ); document.write( "He already has 76 + 78+ 86, or 240
\n" ); document.write( "Subtract 240 from 328 to get 88.
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\n" ); document.write( "Paul needs to study instead of surfing the Internet.
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