document.write( "Question 409072: Beth has the following grades 81%, 88%, 90% 86% on her first four math quizzes. What grade would she need on her next math quiz to have an average of a B (87-90)?
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Algebra.Com's Answer #288058 by rfer(16322) $\"\"$ $\"About$

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(81+88+90+86+x)/5=87
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\n" ); document.write( "x=>90
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