document.write( "Question 425316: Cliff is 6 years older than his sister Claire. In 2 years cliff will be twice as old.\r
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document.write( "X = Cliff present Age
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document.write( "Y = Claire's present Age\r
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document.write( "Question: what is their current age? \n" );
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Algebra.Com's Answer #296181 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! 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) \n" ); document.write( "======================================= \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "========== \n" ); document.write( "- \n" ); document.write( " \n" ); document.write( "Question: what is their current age? \n" ); document.write( " |