document.write( "Question 755410: your test average is a 78 after 5 tests. What must you score on the 6th test to bring your average up to an 80? \n" ); document.write( "
Algebra.Com's Answer #459634 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! your test average is a 78 after 5 tests. What must you score on the 6th test to bring your average up to an 80? \n" ); document.write( "------ \n" ); document.write( "Equation: \n" ); document.write( "(5*78+x)/6 = 80 \n" ); document.write( "390 + x = 480 \n" ); document.write( "x = 90 \n" ); document.write( "============ \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "============= \n" ); document.write( " |