document.write( "Question 819732: John has taken 4 math tests and has an average of 85. What must he get on the 5th test to have an average of 88?
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Algebra.Com's Answer #493233 by TimothyLamb(4379)\"\" \"About 
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( 4(85) + t )/5 = 88
\n" ); document.write( "4(85) + t = 88(5)
\n" ); document.write( "340 + t = 440
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\n" ); document.write( "t = 100
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