document.write( "Question 1079415: The mean of 3 test scores is 74. What mush the score on the 4th test be to raise the mean to a 78? \n" ); document.write( "
Algebra.Com's Answer #693708 by Alan3354(69443)\"\" \"About 
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The mean of 3 test scores is 74. What mush the score on the 4th test be to raise the mean to a 78?
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\n" ); document.write( "Hint:
\n" ); document.write( "3*74 = 222
\n" ); document.write( "4*78 = 312
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