document.write( "Question 1144401: The average of 10 numbers is 6.the average of 5 numbers is 12. What is the mean of the combined 15 numbers \n" ); document.write( "
Algebra.Com's Answer #765500 by greenestamps(13200)\"\" \"About 
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document.write( "          total      10(6)+5(12)\r\n" );
document.write( "mean =  --------- = -------------\r\n" );
document.write( "        how many        10+5
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