document.write( "Question 1031271: the average age of 3 children in the family is 9yrs. if the average age of their parent is 39 yrs,the average age of the whole family is........... \n" ); document.write( "
Algebra.Com's Answer #646026 by Alan3354(69443)\"\" \"About 
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3*9 + 2*39 = 105
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\n" ); document.write( "105/5 = 21
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