document.write( "Question 487851: A 37 year old father has a 4 year old son. In how many years will the father be exactly 4 times as old as his son. \n" ); document.write( "

Algebra.Com's Answer #333159 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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A 37 year old father has a 4 year old son.
\n" ); document.write( " In how many years will the father be exactly 4 times as old as his son.
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\n" ); document.write( "Let y = no. of years until this is true
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\n" ); document.write( "y + 37 = 4(y + 4)
\n" ); document.write( "y + 37 = 4y + 16
\n" ); document.write( "37 - 16 = 4y - y
\n" ); document.write( "21 = 3y
\n" ); document.write( "y = $\"21%2F3\"$
\n" ); document.write( "y = 7 years
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\n" ); document.write( "You can confirm this: 37 + 7 = 4(7 + 4) \n" ); document.write( "

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