document.write( "Question 315472: lynne is currently 100% older than her younger sister sylvie. in 8 years , she will be only 20% older. how old is sylvie now ?\r
\n" ); document.write( "\n" ); document.write( "a) 2 years b) 4 years c) 10 years d) 20 years e) none
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Algebra.Com's Answer #225751 by ankor@dixie-net.com(22740)\"\" \"About 
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lynne is currently 100% older than her younger sister sylvie.
\n" ); document.write( "this means Lynne is Twice as old as Sylvie
\n" ); document.write( "L = 2S
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\n" ); document.write( "in 8 years , she will be only 20% older.
\n" ); document.write( "L + 8 = 1.2(S + 8)
\n" ); document.write( "L + 8 = 1.2s + 9.6
\n" ); document.write( "L = 1.2s + 9.6 - 8
\n" ); document.write( "L = 1.2s + 1.6
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\n" ); document.write( "how old is sylvie now ?
\n" ); document.write( "Replace L with 2S in the above equation
\n" ); document.write( "2S = 1.2s + 1.6
\n" ); document.write( "2s - 1.2s = 1.6
\n" ); document.write( ".8s = 1.6
\n" ); document.write( "s = \"1.6%2F.8\"
\n" ); document.write( "s = 2 yrs Sylvie now
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\n" ); document.write( "Check solution in the statement (Lynne is 4):
\n" ); document.write( "\"in 8 years , she will be only 20% older.
\n" ); document.write( "4 + 8 = 1.2(2 + 8)
\n" ); document.write( "12 = 1.2(10); confirms our solution of S = 2
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