document.write( "Question 1081412: A student has taken 3 tests and earned an 85, 80, and 75. She will take one more test comprised of 20 questions. Each question is worth 5 points. The student would like to have a test average of at least 87. What grades on the 4th test will give her this average? I'm not sure if I should solve this using an inequality equation or not. I've tried to make one, but it didn't work. \n" ); document.write( "
Algebra.Com's Answer #695442 by addingup(3677)\"\" \"About 
You can put this solution on YOUR website!
find the mean (mean is the same as average):
\n" ); document.write( "(85+80+75+x)/4 => 87
\n" ); document.write( "(240+x)/4 => 87
\n" ); document.write( "240+x => 348
\n" ); document.write( "x => 108
\n" ); document.write( "The student is going to have a tough time getting a test average of 87!
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