document.write( "Question 1193459: Masha’s grades in Mathematics for the first three quarters are 78, 89, and 97, respectively. If she wants to have an average grade of at least 90, what must she get for her 4th grading grade (x)? \n" ); document.write( "

Algebra.Com's Answer #825485 by ikleyn(52781) $\"\"$ $\"About$

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\n" ); document.write( "Masha’s grades in Mathematics for the first three quarters are 78, 89, and 97, respectively.
\n" ); document.write( "If she wants to have an average grade of at least 90, what must she get for her 4th grading grade (x)?
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document.write( "She wants\r\n" );
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document.write( "     >= 90.\r\n" );
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document.write( "Multiply both sides of this inequality by 4 and then simplify\r\n" );
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document.write( "    78 + 89 + 97 + x >= 4*90\r\n" );
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document.write( "                   x > = 360 - 78 - 89 - 97\r\n" );
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document.write( "                   x >= 96.\r\n" );
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document.write( "ANSWER.  She must have x at least 96.\r\n" );
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\n" ); document.write( "\n" ); document.write( "To see many other similar (and different) solved problems, look into my lessons\r
\n" ); document.write( "\n" ); document.write( "    - Solved problems on average scores, weight, height and temperature\r
\n" ); document.write( "\n" ); document.write( "    - Solved problems on average scores\r
\n" ); document.write( "\n" ); document.write( "    - Solved problems on average age \r
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