document.write( "Question 425316: Cliff is 6 years older than his sister Claire. In 2 years cliff will be twice as old.\r
\n" ); document.write( "\n" ); document.write( "X = Cliff present Age
\n" ); document.write( "Y = Claire's present Age\r
\n" ); document.write( "\n" ); document.write( "Question: what is their current age?
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Algebra.Com's Answer #296181 by stanbon(75887)\"\" \"About 
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Cliff is 6 years older than his sister Claire.
\n" ); document.write( "In 2 years cliff will be twice as old.
\n" ); document.write( "---
\n" ); document.write( "Equations:
\n" ); document.write( "X = Cliff present Age
\n" ); document.write( "Y = Claire's present Age
\n" ); document.write( "x = y+6
\n" ); document.write( "(x+2) = 2(y+2)
\n" ); document.write( "----
\n" ); document.write( "substitute for \"x\" and solve for \"y\":
\n" ); document.write( "(y+6+2) = 2y+4
\n" ); document.write( "y + 8 = 2y+4
\n" ); document.write( "y = 4 (Claire's present age)
\n" ); document.write( "----
\n" ); document.write( "Solve for \"x\":
\n" ); document.write( "x = y + 6
\n" ); document.write( "x = 4 + 6 = 10 (Cliff's present age)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
\n" ); document.write( "==========
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\n" ); document.write( "Question: what is their current age?
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