document.write( "Question 175079: Your grades on five math tests are 95,86,79,88,83. What grad do you need on the sixth test to have an average of 90%. \n" ); document.write( "

Algebra.Com's Answer #130172 by stanbon(75887) $\"\"$ $\"About$

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Your grades on five math tests are 95,86,79,88,83. What grade do you need on the sixth test to have an average of 90%.
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\n" ); document.write( "Let the grade on the 6th test be \"x\".
\n" ); document.write( "EQUATION:
\n" ); document.write( "(95+86+79+88 + 83 + x)/6 = 90
\n" ); document.write( "431 + x = 540
\n" ); document.write( "x = 109
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\n" ); document.write( "You would need a grade of 109 on the 6th test.
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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