document.write( "Question 161762: curently the father is 4 times older than his daughter in 8 years he will be 3 times as old as her. how old is the daughter now? \n" ); document.write( "

Algebra.Com's Answer #119208 by josmiceli(19441) $\"\"$ $\"About$

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Let $\"f\"$ = Father's age now
\n" ); document.write( "Let $\"d\"$ = Daughter's age now
\n" ); document.write( "(1) $\"f+=+4d\"$
\n" ); document.write( " $\"f+%2B+8+=+3%2A%28d+%2B+8%29\"$
\n" ); document.write( " $\"f+%2B+8+=+3d+%2B+24\"$
\n" ); document.write( "(2) $\"f+=+3d+%2B+16\"$
\n" ); document.write( "Set (1) and (2) equal to eachother
\n" ); document.write( " $\"4d+=+3d+%2B+16\"$
\n" ); document.write( " $\"d+=+16\"$
\n" ); document.write( " $\"f+=+4d\"$
\n" ); document.write( " $\"f+=+4%2A16\"$
\n" ); document.write( " $\"f+=+64\"$
\n" ); document.write( "The Daughter is 16
\n" ); document.write( "check:
\n" ); document.write( " $\"f+%2B+8+=+3%2A%28d+%2B+8%29\"$
\n" ); document.write( " $\"64+%2B+8+=+3%2A%2816+%2B+8%29\"$
\n" ); document.write( " $\"72+=+3%2A24\"$
\n" ); document.write( " $\"72+=+72\"$
\n" ); document.write( "OK \n" ); document.write( "

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