document.write( "Question 614992: If i have a 69 in my class and my final exam counts for 20% of my grade, what do i need to get on the test to make a 77 or higher in the class? \n" ); document.write( "
Algebra.Com's Answer #386838 by Theo(13342)![]() ![]() You can put this solution on YOUR website! you have a 69 which represents 80% of your grade. \n" ); document.write( "the final represents 20% of your grade. \n" ); document.write( "69 * .80 + x * .20 = 77 \n" ); document.write( "simplify to get: \n" ); document.write( "55.2 + .20x = 77 \n" ); document.write( "subtract 55.2 from both sides of the equation to get: \n" ); document.write( ".20x = 77 - 55.2 which results in: \n" ); document.write( ".20x = 21.8 \n" ); document.write( "divide both sides of the equation by .20 to get: \n" ); document.write( "x = 21.8 / .20 = 109. \n" ); document.write( "you need a 109 on the final to make at least 77 in the class. \n" ); document.write( " \n" ); document.write( " |