document.write( "Question 773473: Mother was three times the age of her daughter five years ago, after five year, mother will be twice as old as her daughter. how old is the daughter today? \n" ); document.write( "

Algebra.Com's Answer #471576 by josmiceli(19441) $\"\"$ $\"About$

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Let $\"+m+\"$ = mother's age now
\n" ); document.write( "Let $\"+d+\"$ = daughter's age now
\n" ); document.write( "-------------
\n" ); document.write( "(1) $\"+m+-+5+=+3%2A%28+d+-+5+%29+\"$
\n" ); document.write( "(2) $\"+m+%2B+5+=+2%2A%28+d+%2B+5+%29+\"$
\n" ); document.write( "------------------------
\n" ); document.write( "(1) $\"+m+-+5+=+3d+-+15+\"$
\n" ); document.write( "(1) $\"+m+-+3d+=+-10+\"$
\n" ); document.write( "and
\n" ); document.write( "(2) $\"+m+%2B+5+=+2d+%2B+10+\"$
\n" ); document.write( "(2) $\"+m+-+2d+=+5+\"$
\n" ); document.write( "-----------------
\n" ); document.write( "Subtract (1) from (2)
\n" ); document.write( "(2) $\"+m+-+2d+=+5+\"$
\n" ); document.write( "(1) $\"+-m+%2B+3d+=+10+\"$
\n" ); document.write( " $\"+d+=+15+\"$
\n" ); document.write( "and
\n" ); document.write( "(2) $\"+m+-+2d+=+5+\"$
\n" ); document.write( "(2) $\"+m+-+2%2A15+=+5+\"$
\n" ); document.write( "(2) $\"+m+=+5+%2B+30+\"$
\n" ); document.write( "(2) $\"+m+=+35+\"$
\n" ); document.write( "Mother is 35, daughter is 15
\n" ); document.write( "--------------
\n" ); document.write( "Check:
\n" ); document.write( "5 yrs ago, mother was 30 and daughter
\n" ); document.write( "was 10. Mother was 3 times her age
\n" ); document.write( "------------------------------
\n" ); document.write( "In 5 yrs, mother will be 40
\n" ); document.write( "Daughter will be 20
\n" ); document.write( "Mother will be twice daughter's age
\n" ); document.write( "OK\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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