document.write( "Question 1156324: a student scored 87 and 74 on his first two tests. what scores must he get on the third test so that his mid-term average is 85 or higher? \n" ); document.write( "

Algebra.Com's Answer #779031 by ikleyn(52873) $\"\"$ $\"About$

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document.write( "If \"x\" is that unknown score, then you have this inequality to find x\r\n" );
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document.write( "     >= 85.\r\n" );
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document.write( "Simplify step by step and solve\r\n" );
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document.write( "    87 + 74 + x >= 85*3 = 255\r\n" );
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document.write( "    x            >= 255 - 87 - 74 = 94.\r\n" );
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document.write( "ANSWER.  The student must get at least 94 to get the goal.\r\n" );
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\n" ); document.write( "\n" ); document.write( "For problems on average, see the lessons\r
\n" ); document.write( "\n" ); document.write( "    - Solved problems on average scores, weight, height and temperature\r
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\n" ); document.write( "\n" ); document.write( "    - Solved problems on average age \r
\n" ); document.write( "\n" ); document.write( "    - Miscellaneous problems on average values \r
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\n" ); document.write( "\n" ); document.write( "Consider these lessons as your textbook, handbook, tutorials and (free of charge) home teacher.\r
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