document.write( "Question 1171636: Ali is twice as old as her sister Merl. Four years ago, she was three times as old as Merle. How old is each girl now? \n" ); document.write( "
Algebra.Com's Answer #796549 by VFBundy(438)\"\" \"About 
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Merl's age now = M
\n" ); document.write( "Ali's age now = 2M
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\n" ); document.write( "2M - 4 = 3(M - 4)
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\n" ); document.write( "2M - 4 = 3M - 12
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\n" ); document.write( "-M = -8
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\n" ); document.write( "M = 8
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\n" ); document.write( "Merl's age now = M = 8
\n" ); document.write( "Ali's age now = 2M = 2(8) = 16
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