document.write( "Question 324916: Martin’s average (arithmetic mean) score after 4 tests is 89. What score on the 5th test would bring Martin’s average up to exactly 90?\r
\n" ); document.write( "\n" ); document.write( "(A) 90 (B) 91 (C) 92 (D) 93 (E) 94\r
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Algebra.Com's Answer #232628 by vleith(2983)\"\" \"About 
You can put this solution on YOUR website!
\"%2889+%2B+89+%2B+89+%2B+89+%2B+x%29%2F5+=+90\"
\n" ); document.write( "\"4%2A89+%2B+x+=+450\"
\n" ); document.write( "\"+356+%2B+x+=+450\"
\n" ); document.write( "\"x+=+450-356+=+94\"
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