document.write( "Question 847451: the average of 30 results is 20 & the average of other 20 results is 30. what is the average off all the results ? \n" ); document.write( "
Algebra.Com's Answer #510447 by swincher4391(1107)\"\" \"About 
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30 results with an average of 20 = 600 total points
\n" ); document.write( "20 results with an average of 30 = 600 total points
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\n" ); document.write( "50 results with an average of ? = 1200 total points\r
\n" ); document.write( "\n" ); document.write( "1200/50 = 24
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