document.write( "Question 637410: 14. The present age of a father is equal to the sum of the ages of his 5 children. 12 years hence, the sum the ages of his children will be twice the ages of their father. Find the present age of the father. \n" ); document.write( "
Algebra.Com's Answer #401899 by ankor@dixie-net.com(22740)\"\" \"About 
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The present age of a father is equal to the sum of the ages of his 5 children.
\n" ); document.write( " 12 years hence, the sum the ages of his children will be twice the ages of their father.
\n" ); document.write( "Find the present age of the father.
\n" ); document.write( ":
\n" ); document.write( "let f = father's present age
\n" ); document.write( "let s = sum of the 5 children's now
\n" ); document.write( "then
\n" ); document.write( "f = s
\n" ); document.write( "\"12 years hence, the sum the ages of his children will be twice the ages of their father.\"
\n" ); document.write( "(12 yrs hence, add 12 to each of the five children)
\n" ); document.write( "2(f + 12) = s + 5(12)
\n" ); document.write( "2f + 24 = s + 60)
\n" ); document.write( "2f = s + 60 - 24
\n" ); document.write( "2f = s + 36
\n" ); document.write( "replace s with f
\n" ); document.write( "2f = f + 36
\n" ); document.write( "2f - f = 36
\n" ); document.write( "f = 36 yrs is the father's present age \n" ); document.write( "
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