document.write( "Question 883188: I have four test grades of 80, 80, 85, and 75. What will i need to get on my next test for a overall average of 70? \n" ); document.write( "
Algebra.Com's Answer #533390 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
Find the average of all 5 grades,
\n" ); document.write( "\"%2880%2B80%2B85%2B75%2BX%29%2F5=70\"
\n" ); document.write( "\"320%2BX=350\"
\n" ); document.write( "\"X=30\"
\n" ); document.write( "
\n" ); document.write( "
\n" );