document.write( "Question 1132596: If p is the avg (arthemetic mean) of 3a and 7, q is the avg of 5a and 13, and r is the avg of 4a and 22, what is the average of p,q and r in terms of a?
\n" ); document.write( "3a+7
\n" ); document.write( "4a+10.5
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\n" ); document.write( "12a+42 \n" ); document.write( "

Algebra.Com's Answer #749676 by rothauserc(4718) $\"\"$ $\"About$

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(3a+7)/2 = p
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\n" ); document.write( "(5a+13)/2 = q
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\n" ); document.write( "(4a+22)/2 = r
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\n" ); document.write( "(p+q+r)/3 = (((3a+7)/2) +((5a+13)/2) +((4a+22)/2))/3 =
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\n" ); document.write( "((3a+7) +(5a+13) +(4a+22))/6 =
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\n" ); document.write( "(12a+42)/6 =
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\n" ); document.write( "2a+7
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\n" ); document.write( "average of p, q and r is 2a+7
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