document.write( "Question 1064027: A set of 9 numbers {3, 3, 4, 5, 5, 5, 6, 7, 7} has a mean of 5. Another number is added to the set and the mean becomes 6.
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Algebra.Com's Answer #679053 by ikleyn(52800) $\"\"$ $\"About$

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document.write( "1.  9*5 = 45.\r\n" );
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document.write( "2.   = 6  --->  45 + x = 60  --->  x = 15.\r\n" );
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document.write( "3.  I do not need to know that numbers are in your list.\r\n" );
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