document.write( "Question 379118: What is the answer to this word problem with work shown?
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document.write( "To pass a course, a student must have an average on four exams of at least 70. If a student scores 40, 78, and 88 on the first three tests, what must he earn on the fourth exam to pass the course? \n" );
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Algebra.Com's Answer #269244 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! To pass a course, a student must have an average on four exams of at least 70. \n" ); document.write( " If a student scores 40, 78, and 88 on the first three tests, \n" ); document.write( " what must he earn on the fourth exam to pass the course? \n" ); document.write( ": \n" ); document.write( "Let x = required grade to average at least 70 \n" ); document.write( ": \n" ); document.write( " \n" ); document.write( "Multiply both sides by 4, add up the given values \n" ); document.write( "x + 206 => 280 \n" ); document.write( "x => 280 - 206 \n" ); document.write( "x => 74 to pass the course \n" ); document.write( " |