document.write( "Question 755410: your test average is a 78 after 5 tests. What must you score on the 6th test to bring your average up to an 80? \n" ); document.write( "
Algebra.Com's Answer #459634 by stanbon(75887)\"\" \"About 
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your test average is a 78 after 5 tests. What must you score on the 6th test to bring your average up to an 80?
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\n" ); document.write( "Equation:
\n" ); document.write( "(5*78+x)/6 = 80
\n" ); document.write( "390 + x = 480
\n" ); document.write( "x = 90
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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