document.write( "Question 475516: what grade must a student make on his fourth test in order to have an average of 90 if his other grades are 86 85 94? \n" ); document.write( "

Algebra.Com's Answer #326079 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi,
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document.write( "what grade must a student make on his fourth test in order to have an average of 90 
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document.write( "if his other grades are 86 85 94?
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document.write( "Let x represent the grade on the 4th test
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document.write( "(86 +85 + 94 + x)/4 = 90
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document.write( "(86 +85 + 94 + x)= 360         
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document.write( "               x = 360-265
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document.write( "               x = 95 
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