document.write( "Question 333196: Doug received the following scores on his first four tests: 77%, 83%, 89%, and 86%. What score must he get on his fifth test to average 85% for all five tests? \n" ); document.write( "

Algebra.Com's Answer #238710 by rfer(16322) $\"\"$ $\"About$

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(77+83+89+86+x)/5=85
\n" ); document.write( "335+x=85*5
\n" ); document.write( "335+x=425
\n" ); document.write( "x=90% \n" ); document.write( "

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