document.write( "Question 1073558: A father is seven times as old as his son. In ten years the sum of their ages will be 60. How old will the son be then? \n" ); document.write( "

Algebra.Com's Answer #688360 by Fombitz(32388) $\"\"$ $\"About$

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$\"F=7S\"$
\n" ); document.write( "and
\n" ); document.write( " $\"F%2B10%2BS%2B10=60\"$
\n" ); document.write( " $\"F%2BS%2B20=60\"$
\n" ); document.write( " $\"F%2BS=40\"$
\n" ); document.write( "Substituting,
\n" ); document.write( " $\"7S%2BS=40\"$
\n" ); document.write( " $\"8S=40\"$
\n" ); document.write( "Solve for S then use either equation to solve for F. \n" ); document.write( "

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