document.write( "Question 574905: a father is 42 years old. His children were 6 years, 8 years and 12 years. How old will the father when his age will be equal to the sum of the ages of his three children? \n" ); document.write( "

Algebra.Com's Answer #369329 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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a father is 42 years old. His children were 6 years, 8 years and 12 years.
\n" ); document.write( " How old will the father be when his age will be equal to the sum of the ages of his three children?
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\n" ); document.write( "Let y = no. of years for this to be true
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\n" ); document.write( " (y+6) + (y+8) + (y+12) = y + 42
\n" ); document.write( "3y + 26 = y + 42
\n" ); document.write( "3y - y = 42 - 26
\n" ); document.write( "2y = 16
\n" ); document.write( "y = 8
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\n" ); document.write( "He will 42 + 8 = 50 yrs old
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\n" ); document.write( "You can check this, add 8 to each child, see if it adds up to 50
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