document.write( "Question 985316: Michelle, at present, is 3 times as old as her daughter. In 10 years' time she
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Algebra.Com's Answer #606133 by Edwin McCravy(20060) $\"\"$ $\"About$

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document.write( "Michelle, at present, is 3 times as old as her daughter. \r\n" );
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document.write( "M = 3D\r\n" );
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document.write( "In 10 years' time she [Michelle] wil be twice her daughter's age. \r\n" );
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document.write( "In 10 years' time she [Michelle] will be M+10\r\n" );
document.write( "In 10 years' time the daughter will be D+10\r\n" );
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document.write( "So\r\n" );
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document.write( "M+10 = 2(D+10)\r\n" );
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document.write( "To get the answer, solve this system of equations by substitution:\r\n" );
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document.write( "Edwin

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