document.write( "Question 963884: gerald has an average of 87 after 6 tests. What does Gerald need to get on the next test to finish with an average of 80 on all 7 tests? \n" ); document.write( "
Algebra.Com's Answer #589175 by LinnW(1048)\"\" \"About 
You can put this solution on YOUR website!
(6 * 87 plus the next test score )/7 = the new average score.
\n" ); document.write( "We want
\n" ); document.write( "\"%286%2A87+%2B+x+%29%2F7+%3E=+80\"
\n" ); document.write( "\"%28522+%2B+x+%29%2F7+%3E=+80\"
\n" ); document.write( "multiply each side by 7
\n" ); document.write( "\"%28522+%2B+x+%29+%3E=+80%2A7\"
\n" ); document.write( "\"%28522+%2B+x+%29+%3E=+560\"
\n" ); document.write( "add -522 to each side
\n" ); document.write( "\"+x++%3E=+560-522\"
\n" ); document.write( "\"+x++%3E=+38\"
\n" ); document.write( "
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