document.write( "Question 762065: father age is twice his son 16 years from now. if his son is 7 years old now, how old is his father now?
\n" ); document.write( " \n" ); document.write( "

Algebra.Com's Answer #463668 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
Let $\"+f+\"$ = Father's age now
\n" ); document.write( "Let $\"+s+\"$ = Son's age now
\n" ); document.write( " $\"+f+%2B+16+\"$ = father's age in 16 years
\n" ); document.write( " $\"+s+%2B+16+\"$ = Son's age in 16 years
\n" ); document.write( "-------------------------------
\n" ); document.write( "given:
\n" ); document.write( "(1) $\"+f+%2B+16+=+2%2A%28+s+%2B+16+%29+\"$
\n" ); document.write( "(2) $\"+s+=+7+\"$
\n" ); document.write( "------------
\n" ); document.write( "(1) $\"+f+%2B+16+=+2s+%2B+32+\"$
\n" ); document.write( "(1) $\"+f+-+2s+=+16+\"$
\n" ); document.write( "Substitute (2) into (1)
\n" ); document.write( "(1) $\"+f+-+2%2A7+=+16+\"$
\n" ); document.write( "(1) $\"+f+-+14+=+16+\"$
\n" ); document.write( "(1) $\"+f+=+30+\"$
\n" ); document.write( "The Father is 30 now
\n" ); document.write( "check:
\n" ); document.write( "(1) $\"+30+%2B+16+=+2%2A%28+s+%2B+16+%29+\"$
\n" ); document.write( "(1) $\"+46+=+2s+%2B+32+\"$
\n" ); document.write( "(1) $\"+2s+=+14+\"$
\n" ); document.write( "(1) $\"+s+=+7+\"$
\n" ); document.write( "OK \n" ); document.write( "

\n" );