document.write( "Question 1116104: Chris has two children,Beth and Amy
\n" ); document.write( "Beth is 10 years older than Amy
\n" ); document.write( "Chris says 'I am twice as old as the sum of Beths age and Amys age
\n" ); document.write( "Chris is 40 years old
\n" ); document.write( "How old is amy \n" ); document.write( "

Algebra.Com's Answer #730936 by MathTherapy(10552) $\"\"$ $\"About$

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Chris has two children,Beth and Amy
\n" ); document.write( "Beth is 10 years older than Amy
\n" ); document.write( "Chris says 'I am twice as old as the sum of Beths age and Amys age
\n" ); document.write( "Chris is 40 years old
\n" ); document.write( "How old is amy
\n" ); document.write( "

Let Amy's age be A
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document.write( "Then Beth's is: A + 10
\n" );
document.write( "Chris' is: 2(A + A + 10)
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document.write( "Chris is also 40, so we get: 2(A + A + 10) = 40
\n" );
document.write( "2(2A + 10) = 2(20)
\n" );
document.write( "2A + 10 = 20
\n" );
document.write( "2A = 10
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document.write( "A, or Amy is:  \n" );
document.write( "

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