document.write( "Question 1055431: The average of 10 numbers is 13. The average of the first 6 numbers is 14 and
\n" ); document.write( " that of the last 6 numbers is 11. If the sixth number is 1.5 times the fifth number
\n" ); document.write( " find the average of those two numbers.
\n" ); document.write( "What would be the average of the first four and the last four number.
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Algebra.Com's Answer #670661 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
1.\"%28A%2BB%2BC%2BD%2BE%2BF%2BG%2BH%2BI%2BJ%29%2F10=13\"
\n" ); document.write( "2.\"%28A%2BB%2BC%2BD%2BE%2BF%29%2F6=14\"
\n" ); document.write( "3.\"%28E%2BF%2BG%2BH%2BI%2BJ%29%2F6=11\"
\n" ); document.write( "4.\"F=%283%2F2%29E\"
\n" ); document.write( "From 1,
\n" ); document.write( "\"A%2BB%2BC%2BD%2BE%2BF%2BG%2BH%2BI%2BJ=130\"
\n" ); document.write( "From 2,
\n" ); document.write( "\"A%2BB%2BC%2BD%2BE%2BF=84\"
\n" ); document.write( "Subtracting,
\n" ); document.write( "\"A%2BB%2BC%2BD%2BE%2BF%2BG%2BH%2BI%2BJ-A-B-C-D-E-F=130-84\"
\n" ); document.write( "\"G%2BH%2BI%2BJ=46\"
\n" ); document.write( "From 3,
\n" ); document.write( "\"E%2BF%2BG%2BH%2BI%2BJ=66\"
\n" ); document.write( "Subtracting again,
\n" ); document.write( "\"E%2BF%2BG%2BH%2BI%2BJ-G-H-I-J=66-46\"
\n" ); document.write( "\"E%2BF=20\"
\n" ); document.write( "So the average is,
\n" ); document.write( "\"%28E%2BF%29%2F2=10\"
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\n" ); document.write( "Going back to this equation,
\n" ); document.write( "\"E%2BF=20\"
\n" ); document.write( "Substitute from 4,
\n" ); document.write( "\"E%2B%283%2F2%29E=20\"
\n" ); document.write( "\"%285%2F2%29E=20\"
\n" ); document.write( "\"E=8\"
\n" ); document.write( "So then,
\n" ); document.write( "\"F=%283%2F2%298\"
\n" ); document.write( "\"F=12\"
\n" ); document.write( "From 2,
\n" ); document.write( "\"A%2BB%2BC%2BD%2BE%2BF=84\"
\n" ); document.write( "Substituting,
\n" ); document.write( "\"A%2BB%2BC%2BD%2B20=84\"
\n" ); document.write( "\"A%2BB%2BC%2BD=64\"
\n" ); document.write( "So the average of the first four is,
\n" ); document.write( "\"%28A%2BB%2BC%2BD%29%2F4=16\"
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\n" ); document.write( "Similarly,
\n" ); document.write( "\"E%2BF%2BG%2BH%2BI%2BJ=66\"
\n" ); document.write( "\"20%2BG%2BH%2BI%2BJ=66\"
\n" ); document.write( "\"G%2BH%2BI%2BJ=46\"
\n" ); document.write( "\"%28G%2BH%2BI%2BJ%29%2F4=46%2F4\"
\n" ); document.write( "\"%28G%2BH%2BI%2BJ%29%2F4=23%2F2\"
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