document.write( "Question 662521: A man is 32 years older than his son. Ten years ago he was three times as old as his son was then. Find the present age of each. \n" ); document.write( "

Algebra.Com's Answer #412329 by josmiceli(19441) $\"\"$ $\"About$

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Let $\"+f+\"$ = Father's age
\n" ); document.write( "Let $\"+s+\"$ = Son's age
\n" ); document.write( "given:
\n" ); document.write( " $\"+f+=+s+%2B+32+\"$
\n" ); document.write( " $\"+f+-+10+=+3%2A%28+s+-+10+%29+\"$
\n" ); document.write( "----------------------
\n" ); document.write( "By substitution:
\n" ); document.write( " $\"+s+%2B+32+-+10+=+3s+-+30+\"$
\n" ); document.write( " $\"+2s+=+32+%2B+30+-+10+\"$
\n" ); document.write( " $\"+2s+=+52+\"$
\n" ); document.write( " $\"+s=+26+\"$
\n" ); document.write( "and, since
\n" ); document.write( " $\"+f+=+s+%2B+32+\"$
\n" ); document.write( " $\"+f+=+26+%2B+32+\"$
\n" ); document.write( " $\"+f+=+58+\"$
\n" ); document.write( "The Father is 58
\n" ); document.write( "The Son is 26
\n" ); document.write( "check:
\n" ); document.write( " $\"+f+-+10+=+3%2A%28+s+-+10+%29+\"$
\n" ); document.write( " $\"+58+-+10+=+3%2A%28+26+-+10+%29+\"$
\n" ); document.write( " $\"+48+=+3%2A16+\"$
\n" ); document.write( " $\"+48+=+48+\"$
\n" ); document.write( "OK \n" ); document.write( "

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