document.write( "Question 313341: Fred has test scores of 79,78,82 and 86. What is the lowest score he can get on his 5th test to still average 80%? \n" ); document.write( "

Algebra.Com's Answer #224074 by Fombitz(32388) $\"\"$ $\"About$

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$\"%2879%2B78%2B82%2B86%2BX%29%2F5=80\"$
\n" ); document.write( " $\"325%2BX=400\"$
\n" ); document.write( " $\"X=75\"$
\n" ); document.write( "If he scores a 75, he'll have an 80 average. \n" ); document.write( "

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