document.write( "Question 395229: A mother is twice as old as her daughter.Twenty years ago, the mother was four times as old as her daughter. What is their present age? \n" ); document.write( "
Algebra.Com's Answer #280505 by mananth(16946)\"\" \"About 
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A mother is twice as old as her daughter.Twenty years ago, the mother was four times as old as her daughter. What is their present age?\r
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\n" ); document.write( "daughter = x years
\n" ); document.write( "mother = 2x years
\n" ); document.write( "...
\n" ); document.write( "20 years ago
\n" ); document.write( "daughter = x-20
\n" ); document.write( "mother = 2x-20
\n" ); document.write( "..
\n" ); document.write( "2x-20 = 4(x-20)
\n" ); document.write( "2x-20 = 4x-80
\n" ); document.write( "2x-4x=-60
\n" ); document.write( "-2x=-60
\n" ); document.write( "x=30 daughter's age
\n" ); document.write( "mother's age = 60 years
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